Romans 11:17-23

17If 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 root, 18do not consider yourself to be superior to those other branches. If you do, consider this: You do not support the root, but the root supports you. 19You will say then, “Branches were broken off so that I could be grafted in.” 20Granted. But they were broken off because of unbelief, and you stand by faith. Do not be arrogant, but tremble.

21For if God did not spare the natural branches, he will not spare you either. 22Consider therefore the kindness and sternness of God: sternness to those who fell, but kindness to you, provided that you continue in his kindness. Otherwise, you also will be cut off. 23And if they do not persist in unbelief, they will be grafted in, for God is able to graft them in again.