Deuteronomy 4:2

4:2 Do not add a thing to what I command you nor subtract from it, so that you may keep the commandments of the Lord your God that I am delivering to you.

Deuteronomy 18:18

18:18 I will raise up a prophet like you for them from among their fellow Israelites. I will put my words in his mouth and he will speak to them whatever I command.

Deuteronomy 23:20

23:20 You may lend with interest to a foreigner, but not to your fellow Israelite; if you keep this command the Lord your God will bless you in all you undertake in the land you are about to enter to possess.

Deuteronomy 32:46

32:46 he said to them, “Keep in mind all the words I am solemnly proclaiming to you today; you must command your children to observe carefully all the words of this law.