Graff, Graft (RV) - Vine's Expository Dictionary of New Testament Words
Graff, Graft (RV)[ 1,,G1461, enkentrizo ]
denotes to graft" in (en, in, kentrizo, to graft), to insert a slip of a cultivated tree into a wild one. In Romans 11:17, Romans 11:19, Romans 11:23-Romans 11:24, however, the metaphor is used "contrary to nature" (Romans 11:24), of grafting a wild olive branch (the Gentile) into the good olive tree (the Jews); that unbelieving Jews (branches of the good tree) were broken off that Gentiles might be grafted in, afforded no occasion for glorying on the part of the latter. Jew and Gentile alike must enjoy the Divine blessings by faith alone. So Jews who abide not in unbelief shall, as "the natural branches, be grafted into their own olive tree."