He that walketh uprightly, and worketh righteousness, and speaketh the truth in his heart.

He that walketh without blemish, and worketh justice:

He who is walking uprightly, And working righteousness, And speaking truth in his heart.

He that walks uprightly, and works righteousness, and speaks the truth in his heart.

He who goes on his way uprightly, doing righteousness, and saying what is true in his heart;

He that walketh in integrity. Here we should mark, that in the words there is an implied contrast between the vain boasting of those who are only the people of God in name, or who make only a bare profession of being so, which consists in outward observances, and this indubitable and genuine evidence of true godliness which David commends. But it might be asked, As the service of God takes precedence of the duties of charity towards our neighbors, why is there no mention here made of faith and prayer; for, certainly, these are the marks by which the genuine children of God ought to have been distinguished from hypocrites? The answer is easy: David does not intend to exclude faith and prayer, and other spiritual sacrifices; but as hypocrites, in order to promote their own interests, are not sparing in their attention to a multiplicity of external religious observances, while their ungodliness, notwithstanding, is manifested outwardly in the life, seeing they are fall of pride, cruelty, violence, and are given to deceitfulness and extortion, - the Psalmist, for the purpose of discovering and drawing forth into the light all who are of such a character, takes the marks and evidences of true and sincere faith from the second table of the law. According to the care which every man takes to practice righteousness and equity towards his neighbors, so does he actually show that he fears God. David, then, is not here to be understood as resting satisfied with political or social justice, as if it were enough to render to our fellow-men what is their own, while we may lawfully defraud God of his right; but he describes the approved servants of God, as distinguished and known by the fruits of righteousness which they produce. In the first place, he requires sincerity; in other words, that men should conduct themselves in all their affairs with singleness of heart, and without sinful craft or cunning. Secondly, he requires justice; that is to say, that they should study to do good to their neighbors, hurt nobody, and abstain from all wrong. Thirdly, he requires truth in their speech, so that they may speak nothing falsely or deceitfully. To speak in the heart is a strong figurative expression, but it expresses more forcibly David's meaning than if he had said from the heart. It denotes such agreement and harmony between the heart and tongue, as that the speech is, as it were, a vivid representation of the hidden affection or feeling within.

He that walketh uprightly - Hebrew, "walking perfectly;" that is, one who walks or lives "perfectly." The word "walk" in the Scriptures is often used to denote the manner of life; life being represented as a journey. See the note at Psalm 1:1. The word here rendered "uprightly," or, in the Hebrew, "perfectly," means that which is complete in all its parts; where no part is missing or is defective. See the word explained in the notes at Job 1:1. The Word is not used in the sense in which it is often employed now, as denoting absolute freedom from sin, but as meaning that the character was complete in all its parts; or that the person referred to was upright alike in regard to God and to man. See the sentiment here expressed explained in the notes at Isaiah 33:15.
And worketh righteousness - Does right. That is, he does what is proper to be done in relation to God and to man. Compare Micah 6:8. The doctrine is everywhere laid down in the Scriptures that no man can be a friend of God who does not do habitually what is right. See 1-John 3:6-10.
And speaketh the truth in his heart - He uses language that is sincere, and that is in accordance with his real belief. This is opposed to all mere outward professions, and all hypocritical pretences. His religion has its seat in the heart, and is not the religion of forms; his acts are the expressions of upright intentions and purposes, and are not performed for selfish and hypocritical ends. This is everywhere the nature of true religion.

He that walketh uprightly - הולך תמים holech tamim,
1. He walks perfectly. Who sets God before his eyes, takes his word for the rule of his conduct, considers himself a sojourner on earth, and is continually walking to the kingdom of God. He acts according to the perfections of God's law; he has respect to all its parts, and feels the weight and importance of all its injunctions.
And worketh righteousness -
2. He is not satisfied with a contemplative life; he has duties to perform. The law of righteousness has placed him in certain relations, and each of these relations has its peculiar duties. פעל צדק poel tsedek, the words here used, signify to give just weight, to render to all their dues.
1. As he is the creature of God, he has duties to perform to him. He owes God his heart: May son, give me thy heart; and should love him with all his heart, soul, mind, and strength. This is giving God his due.
2. As a member of civil society, he has various duties to perform to his fellows, as they have to him. He is to love them as himself, and do unto all men as he would they should do unto him.
3. There are duties which he owes to himself. That his body may be in health, vigor, and activity, he should avoid every thing by which it might be injured, particularly all excesses in eating, drinking, sleeping, etc. That his soul may be saved, he should avoid all sin; all irregular and disorderly passions. He owes it to his soul to apply to God for that grace which produces repentance, faith, and holiness; and in order to get all these blessings, he should read, watch, pray, hear the word preached, and diligently use all the ordinances of God. He who acts not thus, defrauds both his body and soul: but the person in the text works righteousness - gives to all their due; and thus keeps a conscience void of oifence, both towards God and man.
And speaketh the truth in his heart -
3. He is a true man; in him there is no false way. He is no man of pretenses; speaking one thing, and meaning another. He professes nothing but what he feels and intends; with him there are no hollow friendships, vain compliments, nor empty professions of esteem, love, regard, or friendship. His mouth speaks nothing but what his heart dictates. His heart, his tongue, and his hand, are all in unison. Hypocrisy, guile, and deceit, have no place in his soul.

He that (a) walketh uprightly, and worketh righteousness, and speaketh the truth in his heart.
(a) He shows that we cannot call on God unless we trust in him.

He that walketh uprightly,.... Or "perfectly" (e); see Genesis 17:1; not so as to be without sin entirely, but as not to be chargeable with any notorious crime, and living in it; moreover, perfection and uprightness often signify sincerity, and the phrase here may design an Israelite indeed, in whom is no guile; whose faith is unfeigned, whose love is without dissimulation, whose hope is without hypocrisy, and his whole conduct without fraud and deceit; likewise such an one may be said to walk uprightly who walks according to the truth of the Gospel, and by faith on Christ and in Christ, as he has received him; and such an one is fit to be a member of a Gospel church;
and worketh righteousness; not in order to his justification before God; for not such an one, but he that trusts in the Lord for righteousness, shall inherit his holy mountain, Isaiah 57:12; but he that works the work of faith, and believes in the righteousness of Christ; who looks to it and receives it; that lays hold on it and pleads it as his justifying righteousness; he that does righteousness in this sense, is righteous as Christ is righteous, 1-John 3:7; and such an one is a proper person to dwell in his house; and who also by faith does works of righteousness, and whose life is a series and course of righteousness, as a fruit of his faith, and in consequence of his having laid hold on the righteousness of Christ;
and speaketh the truth in his heart; receives Christ who is the truth, and the Gospel the word of truth into his heart, and makes an hearty profession of the same before men; and both speaks according to his light in the Scriptures of truth, whenever he speaks of divine things; and in common conversation speaks truth from his heart to his neighbour, and does not speak with a double heart, or say one thing with his mouth, and intend another in his heart; see Psalm 12:2; or endeavour to deceive persons, and impose a falsehood on them, or tell them lies; for as such a person is not fit to dwell in a private house, or to be in a civil society, much less is he a proper person to be in the house of God.
(e) "perfectus", Montanus, Gejerus,

walketh--(Compare Psalm 1:1).
uprightly--in a complete manner, as to all parts of conduct (Genesis 17:1), not as to degree.
worketh--or, "does."
righteousness--what is right.
in his heart--sincerely (Proverbs 23:7).

Uprightly - Loving, and serving God, and loving his neighbour not in word only, but in truth; and this constantly. Worketh - Makes it his business to do justly, to give to every one his due, first to God, and then to men. Speaketh - His words and professions to God and men, agree with the thoughts and purposes of his heart.