Romans 11:11-12, 17, 23-24

I say then, Did they stumble that they might fall? God forbid: but by their fall salvation is come unto the Gentiles, to provoke them to jealousy. Now if their fall is the riches of the world, and their loss the riches of the Gentiles; how much more their fulness?

But if some of the branches were broken off, and thou, being a wild olive, wast grafted in among them, and didst become partaker with them of the root of the fatness of the olive tree

And they also, if they continue not in their unbelief, shall be grafted in: for God is able to graft them in again. For if thou wast cut out of that which is by nature a wild olive tree, and wast grafted contrary to nature into a good olive tree; how much more shall these, which are the natural branches, be grafted into their own olive tree?