"The connection between baptism and circumcision is quite clear in Colossians 2:11-12. The connection is not direct, but indirect and the point of contact between them is Christ and baptism is the sign and seal of that circumcision. In v.11 Paul says "in him [i.e. in Christ] you were also circumcised with the circumcision done by Christ" and in v.12 he says exactly how it is that we were circumcised in and by Christ: "having been buried with him in baptism and raised with him through your faith...." For Paul, in the New covenant, our union with Christ is our circumcision. In baptism, we are identified with Christ's baptism/circumcision, as it were, on the cross. Neither baptism nor circumcision effects this union (ex opere operato), rather God the Spirit unites us to Christ, makes us alive and gives us faith."

JD wrote:
This gentleman is completely wrong about everything he has mentioned.
.......
Israel is the people of God, the church is the family of God. They are different!
Ro 9:8 That is, They which are the children of the flesh, these are not the children of God: but the children of the promise are counted for the seed.

Rom 9:6 Not as though the word of God hath taken none effect. For they are not all Israel, which are of Israel:

Rom 9:11 (For the children being not yet born, neither having done any good or evil, that the purpose of God according to election might stand, not of works, but of him that calleth)

Everyone who believes is the true son of Abraham.(Rom 4:11,17). Romans 9:6-9 teaches that a Jew is one who loves the Messiah Jesus and trusts him only for salvation.(1Cor 10:3, Eph2:8/9).