Deuteronomy 4:5

“Behold, I have taught you statutes and judgments, even as the Lord my God commanded me, etc.] He had faithfully delivered them, without adding them, or diminishing from them, and had diligently instructed the Israelites in them, had taken pains to lead them into a thorough knowledge and understanding them: that ye should do so in the land whither ye go possess it; do in like manner as the commandments the Lord direct to; or that which is right f53; proper and fitting to be done, by doing which they continue in the land they were about to possess, therefore when in it were to be careful to them; some of them could not be done till they came into it, and all were to be done in it.”

“this is your wisdom and your understanding in the sight of the nations, which shall hear all these statutes--Moses predicted that the faithful observance of the laws given them would raise their national character for intelligence and wisdom. In point of fact it did do so; for although the heathen world generally ridiculed the Hebrews for what they considered a foolish and absurd exclusiveness, some of the most eminent philosophers expressed the highest admiration of the fundamental principle in the Jewish religion--the unity of God; and their legislators borrowed some laws from the constitution of the Hebrews.”

“Deu 4:1; Pro 22:19, Pro 22:20; Mat 28:20; Act 20:27; Co1 11:28, Co1 15:3; Th1 4:1, Th1 4:2; Heb 3:5; The people had been often ready to conclude that Moses taught them by his own authority; but at the close of his life he solemnly assured them that he had instructed them exactly as the Lord had commanded him, neither more, nor less, nor otherwise. This is a most express declaration that he was divinely inspired, and utterly incompatible with his integrity of character, if he was not. Scott. Deuteronomy 4:6”