Verse from Exodus

于是，摩西回到耶和华那里，说：“唉，这人民犯了大罪，为自己做了金神像。(出埃及记 32:31)

Then Moses returned to the Lord, and said, "Alas, this people has committed a great sin, and they have made a god of gold for themselves. (Exodus 32:31)

God knows that our hearts have a tendency to stray. His Word makes it clear that He is the Lord and that we are to worship “no other gods” (Ex. 20:2-6).

As long as you want anything very much, especially more than you want God, it is an idol. 

—A. B. Simpson