Thou shall bring no false idols before me
"Thou shall bring no false idols before me," is the second commandments which builds on the all important first commandment "I am the Lord, thy God."
The second testament is at its core a warning against worshiping inanimate objects such as statues or likenesses of false gods. Idolatry, in Judaism, is one of three sins (including) adultery, and murder, which have to be resisted up to and to the point of death.
In The New Testament, the commandments takes a different form as spoken by Jesus, who said, "love the Lord, thy God, with all your heart, soul, and mind." Saying that this was the greatest of commandments.