Romans 11:20

18Boast not against the branches. But if thou boast, thou bearest not the root, but the root thee.

19Thou wilt say then, The branches were broken off, that I might be graffed in.

20Well; because of unbelief they were broken off, and thou standest by faith. Be not highminded, but fear:

21For if God spared not the natural branches, take heed lest he also spare not thee.

22Behold therefore the goodness and severity of God: on them which fell, severity; but toward thee, goodness, if thou continue in his goodness: otherwise thou also shalt be cut off.