CAB(i)
15 For if their casting away means reconciliation for the world, what will their acceptance be, if not life from the dead?
16 For if the firstfruit is holy, so also the lump; and if the root is holy, so also the branches.
17 But if some of the branches were broken off, and you, being a wild olive tree, were grafted in among them, and became a partaker of the root and of the fatness of the olive tree,
18 do not boast against the branches. But if you do boast, remember that you do not support the root, but the root supports you.
19 You will say then, "Branches were broken off so that I might be grafted in."
20 Well said. By unbelief they were broken off, but you stand by faith. Do not be arrogant, but fear.
21 For if God did not spare the natural branches, perhaps He may not spare you either.
22 Behold then the kindness and severity of God: upon those that fell, severity; but upon you, kindness, if you continue in His kindness. Otherwise you also shall be cut off.
23 And they also, if they do not remain in unbelief, shall be grafted in, for God is able to graft them in again.