John 4:22 and Romans 2:28-29

You worship that which you don’t know. We worship that which we know; for salvation is from the Jews.

John 4:22

28 For he is not a Jew who is one outwardly, neither is that circumcision which is outward in the flesh; 29 but he is a Jew who is one inwardly, and circumcision is that of the heart, in the spirit, not in the letter; whose praise is not from men, but from God.

Romans 2:28-29