2 Kings 17:12

and they served idols, whereof Jehovah had said unto them, Ye shall not do this thing.

Exodus 20:3-5

Thou shalt have no other gods before me.

Exodus 34:14

for thou shalt worship no other god: for Jehovah, whose name is Jealous, is a jealous God:

Leviticus 26:1

Ye shall make you no idols, neither shall ye rear you up a graven image, or a pillar, neither shall ye place any figured stone in your land, to bow down unto it: for I am Jehovah your God.

Deuteronomy 4:15-19

Take ye therefore good heed unto yourselves; for ye saw no manner of form on the day that Jehovah spake unto you in Horeb out of the midst of the fire.

Deuteronomy 4:23-25

Take heed unto yourselves, lest ye forget the covenant of Jehovah your God, which he made with you, and make you a graven image in the form of anything which Jehovah thy God hath forbidden thee.

Deuteronomy 5:7-9

Thou shalt have no other gods before me.

Deuteronomy 12:4

Ye shall not do so unto Jehovah your God.

Treasury of Scripture Knowledge

Summary

For they served idols, whereof the LORD had said unto them, Ye shall not do this thing.

Bible References

Whereof

Exodus 20:3
Thou shalt have no other gods before me.
Exodus 34:14
for thou shalt worship no other god: for Jehovah, whose name is Jealous, is a jealous God:
Leviticus 26:1
Ye shall make you no idols, neither shall ye rear you up a graven image, or a pillar, neither shall ye place any figured stone in your land, to bow down unto it: for I am Jehovah your God.
Deuteronomy 4:19
and lest thou lift up thine eyes unto heaven, and when thou seest the sun and the moon and the stars, even all the host of heaven, thou be drawn away and worship them, and serve them, which Jehovah thy God hath allotted unto all the peoples under the whole heaven.
Deuteronomy 5:7
Thou shalt have no other gods before me.

Ye shall not

Deuteronomy 4:15
Take ye therefore good heed unto yourselves; for ye saw no manner of form on the day that Jehovah spake unto you in Horeb out of the midst of the fire.
Deuteronomy 12:4
Ye shall not do so unto Jehovah your God.

American Standard Version Public Domain