Deuteronomy 6:14
Ye shall not go after other gods from the gods of the peoples which are round about you;
Jeremiah 25:6
And ye shall not go after other gods to serve them and to worship to them, and ye shall not irritate me in the work of your hands; and I will not do evil to you.
Deuteronomy 8:19
And it was, if forgetting, thou shalt forget Jehovah thy God, and thou wentest after other gods, and served them and worshipped to them, I testified against you this day, that perishing, ye shall perish.
Deuteronomy 11:28
And a cursing if ye shall not hear to the commands of Jehovah your God, and ye turned aside from the way which I command you this day, to go after other gods which thou knewest not
Deuteronomy 13:7
From the gods of the people which are round about you, coming near to thee, or being far off from thee, from the end of the earth even to the end of the earth;
Exodus 34:14-16
For thou shalt not worship another God: for Jehovah, his name is Jealous; he is a jealous God.
1 John 5:21
Little children, watch yourselves from idols. Amen.