Romans 1:21-23

Because, although they learned to know God, yet they did not offer him as God either praise or thanksgiving. Their speculations about him proved futile, and their undiscerning minds were darkened.

John 2:8

And, when they had filled them to the brim, he added: "Now take some out, and carry it to the Master of the Feast." The servants did so.

1 Corinthians 8:4

With reference, then, to eating food that has been offered to idols-we are aware that an idol is nothing in the world, and that there is no God but one.

Treasury of Scripture Knowledge

Summary

And they rejected his statutes, and his covenant that he made with their fathers, and his testimonies which he testified against them; and they followed vanity, and became vain, and went after the heathen that were round about them, concerning whom the LORD had charged them, that they should not do like them.

Vanity

Bible References

Vanity

John 2:8
And, when they had filled them to the brim, he added: "Now take some out, and carry it to the Master of the Feast." The servants did so.

Became vain

Romans 1:21
Because, although they learned to know God, yet they did not offer him as God either praise or thanksgiving. Their speculations about him proved futile, and their undiscerning minds were darkened.
1 Corinthians 8:4
With reference, then, to eating food that has been offered to idols-we are aware that an idol is nothing in the world, and that there is no God but one.