God's grace as ingrafting
ÒIf some of the branches have been broken off, and you, though a wild olive shoot, have been grafted in among the others and now share in the nourishing sap from the olive rootÉÓ – Romans 11:17
ÒAnd if they do not persist in unbelief, they will be grafted in, for God is able to graft them in again.Ó – Romans 11:23