One indeed, etc. He had spoken before of scruples in the choice of meats; he now adds another example of difference, that is, as to days; and both these arose from Judaism. For as the Lord in his law made a difference between meats and pronounced some to be unclean, the use of which he prohibited, and as he had also appointed festal and solemn days and commanded them to be observed, the Jews, who had been brought up from their childhood in the doctrine of the law, would not lay aside that reverence for days which they had entertained from the beginning, and to which through life they had been accustomed; nor could they have dared to touch these meats from which they had so long abstained. That they were imbued with these notions, was an evidence of their weakness; they would have thought otherwise, had they possessed a certain and a clear knowledge of Christian liberty. But in abstaining from what they thought to be unlawful, they evidenced piety, as it would have been a proof of presumption and contempt, had they done anything contrary to the dictates of conscience. Here then the Apostle applies the best rule, when he bids every one to be fully assured as to his own mind; by which he intimates that there ought to be in Christians such a care for obedience, that they do nothing, except what they think, or rather feel assured, is pleasing to God. [1] And this ought to be thoroughly borne in mind, that it is the first principle of a right conduct, that men should be dependent on the will of God, and never allow themselves to move even a finger, while the mind is doubtful and vacillating; for it cannot be otherwise, but that rashness will soon pass over into obstinacy when we dare to proceed further than what we are persuaded is lawful for us. If any object and say, that infirmity is ever perplexing, and that hence such certainty as Paul requires cannot exist in the weak: to this the plain answer is, -- That such are to be pardoned, if they keep themselves within their own limits. For Paul's purpose was none other than to restrain undue liberty, by which it happens, that many thrust themselves, as it were, at random, into matters which are doubtful and undetermined. Hence Paul requires this to be adopted, -- that the will of God is to preside over all our actions.

Footnotes

1 - "Unusquisque sententiae suae certus sit;" hekastos en to idio noi plerophoreistho; "unusquisque in animo suo plene certus esto -- let every one be fully sure in his own mind," Beza, Pareus; "let every one be convinced in his mind," Macknight; "let every one freely enjoy his own sentiment," Doddridge This last is by no means the sense: Our own version is the best and the most literal, "let every man be fully persuaded in his own mind;" and with which Calvin's exposition perfectly agrees. For the meaning of the verb here see Romans 4:21. "The Greek word is a metaphor borrowed from ships, which are carried with full sail, and signifieth a most certain persuasion of the truth." -- Leigh. The certain persuasion here refers to both parties -- the eater and the abstainer: both were to do what they were fully convinced was agreeable to the will of God. -- Ed.

One man esteemeth - Greek "judgeth" κρίνει krinei. The word is here properly translated "esteemeth;" compare Acts 13:46; Acts 16:15. The word originally has the idea of "separating," and then "discerning," in the act of judging. The expression means that one would set a higher value on one day than on another, or would regard it as more sacred than others. This was the case with the "Jews" uniformly, who regarded the days of their festivals, and fasts, and Sabbaths as especially sacred, and who would retain, to no inconsiderable degree, their former views, even after they became converted to Christianity.
Another "esteemeth - That is, the "Gentile" Christian. Not having been brought up amidst the Jewish customs, and not having imbibed their opinions and prejudices, they would not regard these days as having any special sacredness. The appointment of those days had a special reference "to the Jews." They were designed to keep them as a separate people, and to prepare the nation for the "reality," of which their rites were but the shadow. When the Messiah came, the passover, the feast of tabernacles, and the other special festivals of the Jews, of course vanished, and it is perfectly clear that the apostles never intended to inculcate their observance on the Gentile converts. See this subject discussed in the second chapter of the Epistle to the Galatians.
Every day alike - The word "alike" is not in the original, and it may convey an idea which the apostle did not design. The passage means that he regards "every day" as consecrated to the Lord; Romans 14:6. The question has been agitated whether the apostle intends in this to include the Christian Sabbath. Does he mean to say that it is a matter of "indifference" whether this day be observed, or whether it be devoted to ordinary business or amusements? This is a very important question in regard to the Lord's day. That the apostle did not mean to say that it was a matter of indifference whether it should be kept as holy, or devoted to business or amusement, is plain from the following considerations.
(1) the discussion had reference only to the special customs of the "Jews," to the rites and practices which "they" would attempt to impose on the Gentiles, and not to any questions which might arise among Christians as "Christians." The inquiry pertained to "meats," and festival observances among the Jews, and to their scruples about partaking of the food offered to idols, etc.; and there is no more propriety in supposing that the subject of the Lord's day is introduced here than that he advances principles respecting "baptism" and "the Lord's supper."
(2) the "Lord's day" was doubtless observed by "all" Christians, whether converted from Jews or Gentiles; see 1-Corinthians 16:2; Acts 20:7; Revelation 1:10; compare the notes at John 20:26. The propriety of observing "that day" does not appear to have been a matter of controversy. The only inquiry was, whether it was proper to add to that the observance of the Jewish Sabbaths, and days of festivals and fasts.
(3) it is expressly said that those who did not regard the day regarded it as not to God, or to honor God; Romans 14:6. They did it as a matter of respect to him and his institutions, to promote his glory, and to advance his kingdom. Was this ever done by those who disregard the Christian Sabbath? Is their design ever to promote his honor, and to advance in the knowledge of him, by "neglecting" his holy day? Who knows not that the Christian Sabbath has never been neglected or profaned by any design to glorify the Lord Jesus, or to promote his kingdom? It is for purposes of business, gain, war, amusement, dissipation, visiting, crime. Let the heart be filled with a sincere desire to "honor the Lord Jesus," and the Christian Sabbath will be reverenced, and devoted to the purposes of piety. And if any man is disposed to plead "this passage" as an excuse for violating the Sabbath, and devoting it to pleasure or gain, let him quote it "just as it is," that is, let "him neglect the Sabbath from a conscientious desire to honor Jesus Christ." Unless this is his motive, the passage cannot avail him. But this motive never yet influenced a Sabbath-breaker.
Let every man - That is, subjects of this kind are not to be pressed as matters of conscience. Every man is to examine them for himself, and act accordingly. This direction pertains to the subject under discussion, and not to any other. It does not refer to subjects that were "morally" wrong, but to ceremonial observances. If the "Jew" esteemed it wrong to eat meat, he was to abstain from it; if the Gentile esteemed it right, he was to act accordingly. The word "be fully persuaded" denotes the highest conviction, not a matter of opinion or prejudice, but a matter on which the mind is made up by examination; see Romans 4:21; 2-Timothy 4:5. This is the general principle on which Christians are called to act in relation to festival days and fasts in the church. If some Christians deem them to be for edification, and suppose that their piety will be promoted by observing the days which commemorate the birth, and death, and temptations of the Lord Jesus, they are not to be reproached or opposed in their celebration. Nor are they to attempt to impose them on others as a matter of conscience, or to reproach others because they do not observe them.

One man esteemeth one day above another - Perhaps the word ἡμεραν, day, is here taken for time, festival, and such like, in which sense it is frequently used. Reference is made here to the Jewish institutions, and especially their festivals; such as the passover, pentecost, feast of tabernacles, new moons, jubilee, etc. The converted Jew still thought these of moral obligation; the Gentile Christian not having been bred up in this way had no such prejudices. And as those who were the instruments of bringing him to the knowledge of God gave him no such injunctions, consequently he paid to these no religious regard.
Another - The converted Gentile esteemeth every day - considers that all time is the Lord's, and that each day should be devoted to the glory of God; and that those festivals are not binding on him.
We add here alike, and make the text say what I am sure was never intended, viz. that there is no distinction of days, not even of the Sabbath: and that every Christian is at liberty to consider even this day to be holy or not holy, as he happens to be persuaded in his own mind.
That the Sabbath is of lasting obligation may be reasonably concluded from its institution (see the note on Genesis 2:3) and from its typical reference. All allow that the Sabbath is a type of that rest in glory which remains for the people of God. Now, all types are intended to continue in full force till the antitype, or thing signified, take place; consequently, the Sabbath will continue in force till the consummation of all things. The word alike should not be added; nor is it acknowledged by any MS. or ancient version.
Let every man be fully persuaded - With respect to the propriety or non-propriety of keeping the above festivals, let every man act from the plenary conviction of his own mind; there is a sufficient latitude allowed: all may be fully satisfied.

(6) One man esteemeth one day above another: another esteemeth every day [alike]. (7) Let (d) every man be fully persuaded in his own mind.
(6) Another example of the difference of days according to the law. (7) He sets against this contempt, and hasty or rash judgments, a continual desire to profit, that the strong may be certainly persuaded of their liberty, of what manner and sort it is, and how they ought to use it: and again the weak may profit daily, in order that they do not abuse the gift of God, or please themselves in their infirmity.
(d) That he may say in his conscience that he knows and is persuaded by Jesus Christ, that nothing is unclean of itself: and this persuasion must be grounded upon the word of God.

One man esteemeth one day above another,.... This is another instance of the difference of sentiments in this church, about the observation of rituals; and is not to be understood of days appointed by the Christian churches for fasting, or abstinence from certain meats, either once a year, as the "Quadragesima", or Lent; or twice a week, as Wednesdays and Fridays; for these are things of much later observation, and which had never been introduced into the church of Rome in the apostle's time; nor were there any disputes about them: much less of days of Heathenish observation, as lucky or unlucky, or festivals in honour of their gods; for the apostle would never say, that a man who regarded such a day, regarded it to the Lord; nor would have advised to a coalition and Christian conversation with such a man, but rather to exclude him from all society and communion: it remains, therefore, that it must be understood of Jewish days, or of such as were appointed to be observed by the Jews under the former dispensation, and which some thought were still to be regarded; wherefore they esteemed some days in the year above others, as the days of unleavened bread, or the passover; particularly the first night, which was a night to be observed throughout their generations; and in their service for it to this day, use these words, , "how different is this night from every other night" (n)? and the feast of tabernacles, especially the last and great day of the feast, and the day of Pentecost; also one day in a month above others, the first day of the month, or new moon; and one day in a week, the seventh day sabbath: now there were some, who thought that the laws respecting these days were still in force, particularly the latter, and therefore esteemed it above another: but let it be observed, that the man that did so was one that was weak in faith; the same man that ate herbs, because he would not be guilty of violating those laws, which ordered a distinction of meats to be observed, the same weak man esteemed one day above another, imagining the laws concerning the distinction of days were still obligatory, not rightly understanding the doctrine of Christian liberty, or freedom from the yoke of the ceremonial law:
another esteemeth every day alike; that is, one that is strong in faith, and has a greater degree of the knowledge of the Gospel, and of evangelical liberty, knows that the distinction of days, as well as of meats, is taken away, since the word was made flesh, and tabernacled among us, Christ the passover is sacrificed for us, the firstfruits of the Spirit have been received, and light by the church from the sun of righteousness, and Christ the true sabbath and rest is come; and therefore, being firmly persuaded there is no more holiness in days than there is in places, has the same regard for one day as another. The difference between these two lay here, the weak brother regarded a day for the sake of a day, as having by a positive law, he supposed to be in force, a superiority to another, and he regarded worship for the sake of this day; the stronger brother, though he also observed a day for divine worship, which is the Lord's day, since there must be some time for it as well as place, yet he observed the day for the sake of worship, and not worship for the sake of the day:
let every man be fully persuaded in his own mind; this is the advice the apostle gives to both parties; his sense is, that he would have each of them fully enjoy their own principle and practice undisturbed; he would have the weak brother, that esteemed one day above another, indulged in his way, since it arose from weakness, until he had better light, nor should he be despised for his weakness; he would have the stronger Christian also peaceably enjoy his sentiment, and pursue what he believed to be right; nor should he be judged, censured, and condemned, as a profane person, and a transgressor of the law: his counsel is, that they would sit down and carefully examine the word of God, and act according to the best light they should receive from thence; and take care especially, that they did not act contrary to their own consciences, with doubt and hesitation; they ought to be thoroughly satisfied in their own minds, and being so, should content themselves with their different sentiments and practices, without despising or censuring one another.
(n) Haggada Shel Pesach, p. 5.

One man esteemeth one day above another: another esteemeth every day--The supplement "alike" should be omitted, as injuring the sense.
Let every man be fully persuaded in his own mind--be guided in such matters by conscientious conviction.

One man esteemeth one day above another. A second difference of opinion is now cited. Some, Jewish converts or Gentiles who did not understand that the old covenant was ended, believed that the Jewish Sabbaths and new moons should be kept sacred. Compare Colossians 2:16, and Galatians 4:10.
Let every man be fully persuaded in his own mind. Let each act as he thinks right. If he thinks he ought to observe the days, let him do as his conscience demands. If he thinks otherwise, let him not observe them.
He that regardeth the day, etc. It is regarded unto the Lord if he keeps it, because he thinks it is the Lord's will. If another refuses to keep it, because he believes it is the Lord's will that he should not, his non-keeping is to the Lord.
He that eateth. Meats. See Romans 14:2. He who obeys what he regards the Lord's will in this, either eating or abstaining, does it with reference to the Lord.
For none of us liveth to himself. No Christian lives to please himself, but with the conscious aim of pleasing the Lord.
We are the Lord's. While living, the aim must be to do the Lord's will, and even when we die we will be fully resigned to his will. We are not at our own disposal.
For to this end Christ both died, and rose, etc. The life of the Christian is a new life that springs out of Christ's death (Romans 6:4); we die with him; we rise with him; hence, since our life comes from him, and springs from his death and resurrection, these make him our Lord, whether we be living or dead.

One day above another - As new moons, and other Jewish festivals. Let every man be fully persuaded - That a thing is lawful, before he does it.