What scripture passage did you read?
Sure, but to be clear, this passage alone didn't bring me all the way. There was much intense study I had to do afterward.
Romans 11, the olive tree. You have both Jewish branches and Gentile branches in the same tree, and both can be cut off. They also share a common fatness, as the passage itself says.
So, if the New Testament church is a different entity than Israel, then why are they in the same tree?
I also understood that Christ would be the life--the fatness--of the New Testament church. If Israel was only physical and temporal, and not spiritual per se, then why are they sharing the same fatness as the New Testament church? If Christ is the life of one, He must be the life of the other. Then it cannot be said Israel was primarily about physical and temporal blessings, but
spiritual ones.
Thus, no argument can be made that because the NT church is spiritual, but OT Israel is carnal, therefore we do assume to not include children of those who profess.
They receive similar treatments--branches can be cut off in one, as well as in the other.
I'm forced to the conclusion that the NT church is the continuation of the church in Israel, thus the same organization.
And if they are the same organization, I may conclude that the children are included now as they were back then, unless it's clear they were cut off. So, when we read of household baptisms, we are reading about a rite performed far back as Abraham--just with water now.
And if branches can be cut off but the elect cannot be cut off from Christ, Romans 11 is basis for the visible/invisible membership. Thus, it destroys any ambition of having a church membership which strictly resembles the invisible one. One less argument on why to presume to cut out children, or to put off believing their profession for an elongated period of time.
Again, that's not everything. You have much study to do. But it's a rich study, well worth it. This study was revolutionary in my spiritual life if only for the fact that it got me to see the goodness of God in a way I never had before. Whatever you do, keep Christ at the center. Don't study to argue, but to be a better disciple to Him who shed His blood for you, and to the Father who loved you and gave Himself to you. You'll get out of the cage much faster if you do that.