Romans 11:16-22

For if the first-fruit has been sanctified, so also has the whole. And if the root is holy, so also are the branches. And if some of the branches are broken, and if you, being a wild olive branch, are grafted on to them, and you become a partaker of the root and of the fatness of the olive tree, do not glorify yourself above the branches. For though you glory, you do not support the root, but the root supports you. Therefore, you would say: The branches were broken off, so that I might be grafted on. Well enough. They were broken off because of unbelief. But you stand on faith. So do not choose to savor what is exalted, but instead be afraid. For if God has not spared the natural branches, perhaps also he might not spare you. So then, notice the goodness and the severity of God. Certainly, toward those who have fallen, there is severity; but toward you, there is the goodness of God, if you remain in goodness. Otherwise, you also will be cut off.