Paedobaptist: So let me get this straight, one your biggest objections to infant baptism rests on the understanding that the New Covenant is comprised of only the elect/regenerate?
Credo: That’s right. Hebrews 8 (citing Jeremiah 31) makes this plain. Everyone in the New Covenant knows the Lord. That’s what makes it unlike the Mosaic Covenant. The old covenant was more ethnic in nature. It included the children of Jews. As such, it was a covenant that included both the regenerate and unregenerate. This is contrasted with that of the New Covenant. Only genuine believers (the regenerate) make up the New Covenant. This fact is a crucial part of its newness!
Paedobaptist: But surely you grant that not everyone in the church is regenerate, right?
Credo: Of course. There are false believers and apostates. But they aren’t part of the New Covenant.
Paedobaptist: But many of these false believers are baptized, right?
Paedobaptist: So they receive the sign of the covenant but are not part of the covenant community?
Credo: That’s right. Only the elect comprise the New Covenant.
Paedobaptist: But isn’t there an external administration of the covenant? In other words, don’t you believe that they are connected to the New Covenant in some sense?
Credo: They are […]