131 If prophets or those who divine by dreams appear among you and promise you omens or portents, 2 and the omens or the portents declared by them take place, and they say, "Let us follow other gods" (whom you have not known) "and let us serve them," 3 you must not heed the words of those prophets or those who divine by dreams; for the Lord your God is testing you, to know whether you indeed love the Lord your God with all your heart and soul. 4 The Lord your God you shall follow, him alone you shall fear, his commandments you shall keep, his voice you shall obey, him you shall serve, and to him you shall hold fast.
Matthew Henry's Commentary on Deuteronomy 13:1-4
Commentary on Deuteronomy 13:1-5
(Read Deuteronomy 13:1-5)
Moses had cautioned against the peril that might arise from the Canaanites. Here he cautions against the rise of idolatry among themselves. It is needful for us to be well acquainted with the truths and precepts of the Bible; for we may expect to be proved by temptations of evil under the appearance of good, of error in the guise of truth; nor can any thing rightly oppose such temptations, but the plain, express testimony of God's word to the contrary. And it would be a proof of sincere affection for God, that, notwithstanding specious pretences, they should not be wrought upon the forsake God, and follow other gods to serve them.