Romans 9:30 states that Gentiles who did not pursue righteousness attained it, which Paul then supports with this Isaiah quote.

Isaiah 55:5 describes a nation that did not know God running to Him, directly paralleling the Gentiles who found God without seeking.

Isaiah 65:1 is the direct source Paul quotes — God found by those who did not seek Him, referring to Gentiles.

2 Chronicles 15:4 says when Israel sought God, He was found—contrasting with Romans where Gentiles find God without seeking.

Jeremiah 29:14 promises God will be found when sought—a contrast to Romans where God is found by those not seeking Him.

Acts 9:6 shows Christ finding Saul who was not seeking him — a direct example of the principle Paul quotes from Isaiah.

Acts 13:46 records Paul turning to Gentiles after Jewish rejection, embodying the 'found by those who did not seek' pattern.

In John 9:35, Jesus finds the man born blind — an outsider who did not seek him, mirroring the 'found by those who did not seek me' theme.

1 John 4:19 says we love because He first loved us—highlighting God's initiative, as in Romans where He reveals Himself without being sought.