23 Be careful not to forget the covenant of the LORD your God that he made with you; do not make for yourselves an idol in the form of anything the LORD your God has forbidden.

Read Deuteronomy 4:23 Using Other Translations

Take heed unto yourselves, lest ye forget the covenant of the LORD your God, which he made with you, and make you a graven image, or the likeness of any thing, which the LORD thy God hath forbidden thee.
Take care, lest you forget the covenant of the LORD your God, which he made with you, and make a carved image, the form of anything that the LORD your God has forbidden you.
So be careful not to break the covenant the LORD your God has made with you. Do not make idols of any shape or form, for the LORD your God has forbidden this.