Jake, thank you for your patience with me. I put this in the paedobaptist answers forum because I am genuinely asking questions.
You said:
I recently read an article written by the Founders Ministries that argued paedobaptists are inconsistent because they appeal to the 'Abraham and his seed' principle of the Old Covenant, but they cannot consistently apply this principle to the New Covenant. That is, under the Old Covenant someone could claim the rite of circumcision (and thus be part of Israel) because he was an offspring of Abraham's physical seed.
But under the New Covenant this physical link does not exist. Gal 3 :29 makes it clear "And if you are Christ's, then you are Abraham's offspring, heirs according to promise.
This brings me back to my original argument. The NT household baptism argument makes good sense if you can link it to the physical seed of Abraham. But Gal 3:29 seems to refute the idea of a physical seed in the New Covenant.
Just for the record, I can see the flaws in a number areas of Baptist argument, especially in the yet/not yet aspect of the New Covenant. I'm trying to get my head around this argument.
No question at all about your genuineness
The assumption of the Baptist argument you presented is that the Abrahamic Covenant is temporal in substance while the New Covenant is spiritual. That's a proposition that the New Testament doesn't substantiate. Once that argument is gone, the burden to link a spiritual covenant with a temporal one vanishes.
I won't belabor Romans 4:11 at the moment. If I must link household baptisms to the Abrahamic Covenant aside from the strong parallel to the circumcision of Abraham and his household, Romans 11 is a great New Testament passage.
There is a Jewish tree, which has a sap. In NC times the Jewish tree is not uprooted and replaced, but New Covenant Gentiles are grafted into the same Jewish tree, and share the same sap.
A few questions to ask:
- What is the sap? If the NC church is spiritual, we know the sap must be Christ. But Abraham's Covenant has the same sap. Who's feeding the Abrahamic Covenant?
- If the New Covenant is of different covenant and substance than Abraham's, why are we put into a tree which is obsolete and ready to fade away (Heb 8)? Especially if physical Israel would be permanently scattered within approx. 20 years?
- Was the destruction of Jerusalem in 70 AD a lopping off of branches from the tree in Romans 11, or was it uprooting the tree altogether?
I think the clear answer is that the sap is Christ in both cases. We joined the Jewish tree. The believing Jews did not join ours. The NC is the AC in full blossom.
Then the household/seed principle:
- If Christ is the sap, how does that coincide with a covenant which, in respect to immediate parties, transcends no higher than to give temporary land and temporary promises?
- Does it make sense with the character of God that he is content to be a national god to a people on earth but not their salvific God?
- Did Abraham himself understand and accept circumcision as a sign and seal of righteousness by faith?
- If there is no dichotomy of substance between the Abrahamic and the New, then how can the spirituality of the New Covenant be an argument against the continued use of the household principle, or that the basic membership structure of the church has changed?
- If the substance of the Abrahamic Covenant is spiritual, then what might be God's purposes in including entire households in church membership before New Covenant times, beyond providing a physical people from whom Christ would come?
Also, how might these things change your reading of Galatians?
Forgive me for throwing out a bunch of questions. Sometimes questions are the best way to help you dig through and sort out matters.