Psalm 36:1 is the direct source of Paul's quote — describing the wicked's lack of reverence for God.

Proverbs 8:13 defines fear of the Lord as hating evil — opposite to Romans 3:18 where there is no fear of God.

Proverbs 16:6 shows fear of the Lord leads to turning from evil — contrasting with Paul's statement that there is no fear of God.

Luke 23:40 shows a criminal who fears God, directly contrasting the universal lack of fear described in Romans 3:18.

Deuteronomy 25:18 describes the Amalekites as not fearing God, illustrating the same lack of fear Paul cites universally.

Jeremiah 2:19 declares that the fear of God is not in Israel, directly echoing Paul's claim about all humanity.

Jeremiah 36:24 records that the king and his servants showed no fear of God's words, illustrating the lack of fear Paul describes.

Genesis 20:11 uses the same phrase 'fear of God' in a local context — Paul applies it universally to indict all humanity.

Leviticus 25:17 commands fear of God, countering the universal absence stated in Romans 3:18.

Revelation 19:5 calls all servants to fear God, in contrast to Romans 3:18's claim that no one does.