Adam Clarke on Deuteronomy 6:14

Ye shall not go after other gods - The object of religious worship among every people, whether that object be true or false, is ever considered as the pattern or exemplar to his worshippers. Christians are termed the followers of God; they take God for their pattern, and walk - act, as he does. Hence we see the meaning of the terms in this verse: Ye shall not go after - ye shall not take false gods for your patterns. The Canaanites, Greeks, Romans, etc., were a most impure people, because the objects of their worship were impure, and they went after them, i. e., were like their gods. This serves to show us that such as our Redeemer is, such should we be; and indeed this is the uniform language of God to man: Be ye holy, for I am holy, Lev 21:8; Be ye perfect, as your Father who is in heaven is perfect, Mat 5:48.