The unbelieving Jews will need to be grafted back in again after they repent of their unbelief.
Romans
11:20 Well; because of unbelief they were broken off, and thou standest by faith. Be not highminded, but fear:
11:21 For if God spared not the natural branches, [take heed] lest he also spare not thee.
11:22 Behold 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.
11:23 And they also, if they abide not still in unbelief, shall be graffed in: for God is able to graff them in again.
11:24 For if thou wert cut out of the olive tree which is wild by nature, and wert graffed contrary to nature into a good olive tree: how much more shall these, which be the natural [branches], be graffed into their own olive tree?