Circumcision of the heart was a divine requirement of even the Israelites who were already circumcised in the flesh. Moses told Israel: “You must circumcise the foreskin of your hearts and not harden your necks any longer.” “Jehovah your God will have to circumcise your heart and the heart of your offspring, that you may love Jehovah your God with all your heart and all your soul for the sake of your life.” (De 10:16; 30:6) Jeremiah reminded that wayward nation in his day of the same thing. (Jer 4:4) ‘Circumcision of the heart’ means getting rid of anything in one’s thinking, affections, or motives that is displeasing and unclean in Jehovah’s eyes and that makes the heart unresponsive. Similarly, ears that are not sensitive or responsive are spoken of as “uncircumcised.”​—Jer 6:10; Ac 7:51.

Not Required of Christians. After Jehovah showed his acceptance of Gentiles into the Christian congregation, and since many from the nations were responding to the preaching of the good news, a decision had to be made by the governing body at Jerusalem on the question, Is it necessary for Gentile Christians to get circumcised in the flesh? The conclusion of the matter: The “necessary things” for Gentiles and Jews alike did not include circumcision.​—Ac 15:6-29.