1 Moses and the elders of Israel commanded the people, saying, "Keep all the commandment which I command you this day.
*Minor differences ignored. Grouped by changes, with first version listed as example.
And Moses, with the elders. This precept is of the same character as those that have preceded it; for, as God would have His precepts written on the door-posts, and on the borders of their garments, so that they might constantly meet their eyes, so also would He have a monument existing at the very entrance of their land, from which the people might learn that they dwelt in it, in order that they might worship God purely. Wherefore, lest by the people's carelessness the knowledge of the Law should be obscured, or in any way obliterated, God would have its sum inscribed in a conspicuous place. Hence may be gathered the similarity I have adverted to between the private houses of individuals and the whole land. When the precepts were written on the doors, every one was admonished that his house was sacred to God, and the same was the case with the whole land, so that whosoever entered it might know that it was, as it were, the sanctuary of heavenly doctrine, and thus their zeal might be stirred up to the pure worship of God. The object of the plain and distinct writing of the Scripture, referred to in verse 8, was to take away (the excuse of ) ignorance.
Moses in a third discourse Deut. 27-30, proceeds more specifically to dwell upon the sanctions of the Law. In these chapters he sets before Israel in striking and elaborate detail the blessings which would ensue upon faithfulness to the covenant, and the curses which disobedience would involve. Deut. 27 introduces this portion of the book by enjoining the erection of a stone monument on which the Law should be inscribed as soon as the people took possession of the promised inheritance Deuteronomy 27:1-10; and by next prescribing the liturgical form after which the blessings and cursings should be pronounced Deut. 27:11-26.
And Moses with the elders of Israel (a) commanded the people, saying, Keep all the commandments which I command you this day.
(a) As God's minister and charged with the same.
And Moses, with the elders of Israel, commanded the people,
saying,.... The seventy elders, at the head of whom was Moses, which made the great sanhedrim, or council of the nation; Moses having recited all the laws of God to the people, these joined with him in an exhortation to them to observe and obey them:
keep all the commandments which I command you this day; not in his own name, as being the supreme legislator, but in the name of the Lord, whom they had avouched to be their God and King, from whom he had received them.
As soon as they were come into Canaan, they must set up a monument, on which they must write the words of this law. They must set up an altar. The word and prayer must go together. Though they might not, of their own heads, set up any altar besides that at the tabernacle; yet, by the appointment of God, they might, upon special occasion. This altar must be made of unhewn stones, such as they found upon the field. Christ, our Altar, is a stone cut out of the mountain without hands, refused by the builders, as having no form or comeliness, but accepted of God the Father, and made the Head of the corner. In the Old Testament the words of the law are written, with the curse annexed; which would overcome us with horror, if we had not, in the New Testament, an altar erected close by, which gives consolation. Blessed be God, the printed copies of the Scriptures among us, do away the necessity of such methods as were presented to Israel. The end of the gospel ministry is, and the end of preachers ought to be, to make the word of God as plain as possible. Yet, unless the Spirit of God prosper such labours with Divine power, we shall not, even by these means, be made wise unto salvation: for this blessing we should therefore daily and earnestly pray.
The command in Deuteronomy 27:1 to keep the whole law (שׁמר, inf. abs. for the imperative, as in Exodus 13:3, etc.), with which the instructions that follow are introduced, indicates at the very outset the purpose for which the law written upon stones was to be set up in Canaan, namely, as a public testimony that the Israelites who were entering into Canaan possessed in the law their rule and source of life. The command itself is given by Moses, together with the elders, because the latter had to see to the execution of it after Moses' death; on the other hand, the priests are mentioned along with Moses in Deuteronomy 27:9, because it was their special duty to superintend the fulfilment of the commands of God.
*More commentary available at chapter level.