I'm sorry but you neither understand grafting nor what the passages says. It says the natural branches must be graft in. The Root is not Israel. The Root is Jesus the Christ.False premise. The Natural branches (ref Rom 11) still exist and many have been grafted into their own natural tree. Gentiles are cut from a different tree but at repentance/salvation get cut out of that tree and become grafted into Israel. While the fruit and the leaves may look different (ref any nursery company that sells graft trees) they are all part of the overall called the "Commonwealth of Israel."
Ephesians 2:12 remember that you were at that time separate from Christ, excluded from the commonwealth of Israel, and strangers to the covenants of promise, having no hope and without God in the world.
bugkiller
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