Romans 1:21 References

21 For even though they knew God, they did not honor Him as God or give thanks, but they became afutile in their speculations, and their foolish heart was darkened.

a 2 Kings 17:15, Jeremiah 2:5, Ephesians 4:17

2 Kings 17

15 aThey rejected His statutes and bHis covenant which He made with their fathers and His warnings with which He warned them. And cthey followed vanity and dbecame vain, and went after the nations which surrounded them, concerning which the eLord had commanded them not to do like them.

Jeremiah 2

5 Thus says the Lord, "aWhat injustice did your fathers find in Me, That they went far from Me And walked after bemptiness and became empty?

Ephesians 4

17 aSo this I say, and affirm together with the Lord, bthat you walk no longer just as the Gentiles also walk, in the cfutility of their mind,