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17But if some of the branches were broken off, and you, being a wild olive, were grafted in among them and became partaker with them of the rich root of the olive tree, 18do not be arrogant toward the branches; but if you are arrogant, remember that it is not you who supports the root, but the root supports you. 19You will say then, “Branches were broken off so that I might be grafted in.” 20Quite right, they were broken off for their unbelief, but you stand by your faith. Do not be conceited, but fear; 21for if God did not spare the natural branches, He will not spare you, either.