Paul compares baptism to death. Cf Romans 6. And Paul compares circumcision of the flesh to circumcision of the heart. Cf Galatians. But Paul never, not once, anywhere, compares circumcision to baptism or baptism to circumcision.
And do you know why? Because they aren’t the same thing. And that’s why not a single New Testament theologian would be so foolish as to suggest that they were by comparing the one thing to the other.
But that hasn’t stopped the baby baptizers from doing it. Which means, I suppose, that they think they’re smarter than Paul and the rest of the New Testament authors. That’s quite a bold claim though and not one I think holds much water….
The reason that post New Testament theologians have to compare baptism to circumcision is because they want to make little babies into members of the family of God. But those little babies don’t know what they want. And shoving them into the Church may seem like a good idea, but what it actually does is teach people that they don’t need to decide for God; someone else has already done it for them.
And that’s why Christianity has been befouled by so many pseudo-Christians. Because any Christian who isn’t a Christian by choice is – at the end of the day – no Christian at all.