Circumcision in the bible

Deuteronomy 30:6 The LORD your God will circumcise your hearts and the hearts of your descendants, so that you may love him with all your heart and with all your soul, and live.

Romans 2:29 No, a person is a Jew who is one inwardly; and circumcision is circumcision of the heart, by the Spirit, not by the written code. Such a person's praise is not from other people, but from God.

Jeremiah 4:4 Circumcise yourselves to the LORD, and remove the foreskins of your hearts, ...

Colossians 2:11 In Him you were also circumcised, in the putting off of your sinful nature, with the circumcision performed by Christ and not by human hands.

Deuteronomy 10:16 Circumcise therefore the foreskin of your heart, and be no more stiffnecked.