What scripture says grafted in the body of Christ?
Remember the Parable of the olive tree Jesus gave?
He also spoke this parable: “A certain man had a fig tree planted in his vineyard, and he came seeking fruit on it and found none.Then he said to the keeper of his vineyard, ‘Look, for three years I have come seeking fruit on this fig tree and find none. Cut it down; why does it use up the ground?’But he answered and said to him, ‘Sir, let it alone this year also, until I dig around it and fertilize it.And if it bears fruit, well. But if not, after that you can cut it down.’” - Luke 13:6-9
http://www.biblegateway.com/passage/?search=Luke13:6-9&version=NKJV
The Fig tree is often used as a symbol or Israel in the Bible.
Well, Jesus came searching for three years, looking for fruit from Israel, and found none, so he wanted them to be cut off. But the Holy Spirit said to Him to wait another year, so that He (the Holy Spirit) could work in her, to fertilize and dig around it. After another year, however, Israel was not bearing fruit, and when Steven was martyred, God said, "I've had enough," and He cut off Israel, and grafted in the the Gentiles.
I say then, have they [Israel] stumbled that they should fall? Certainly not! But through their fall, to provoke them to jealousy, salvation has come to the Gentiles. Now if their fall is riches for the world, and their failure riches for the Gentiles, how much more their fullness! For I speak to you Gentiles; inasmuch as I am an apostle to the Gentiles, I magnify my ministry, if by any means I may provoke to jealousy those who are my flesh and save some of them. For if their being cast away is the reconciling of the world, what will their acceptance be but life from the dead? For if the firstfruit is holy, the lump is also holy; and if the root is holy, so are the branches. And if some of the branches were broken off, and you, being a wild olive tree, were grafted in among them, and with them became a partaker of the root and fatness of the olive tree, do not boast against the branches. But if you do boast, remember that you do not support the root, but the root supports you. You will say then, “Branches were broken off that I might be grafted in.” Well said. Because of unbelief they were broken off, and you stand by faith. Do not be haughty, but fear. For if God did not spare the natural branches, He may not spare you either. Therefore consider the goodness and severity of God: on those who fell, severity; but toward you, goodness, if you continue in His goodness. Otherwise you also will be cut off. And they also, if they do not continue in unbelief, will be grafted in, for God is able to graft them in again. For if you were cut out of the olive tree which is wild by nature, and were grafted contrary to nature into a cultivated olive tree, how much more will these, who are natural branches, be grafted into their own olive tree? For I do not desire, brethren, that you should be ignorant of this mystery, lest you should be wise in your own opinion, that blindness in part has happened to Israel until the fullness of the Gentiles has come in. And so all Israel will be saved, as it is written: “The Deliverer will come out of Zion, And He will turn away ungodliness from Jacob; For this is My covenant with them, When I take away their sins.” Concerning the gospel they are enemies for your sake, but concerning the election they are beloved for the sake of the fathers. For the gifts and the calling of God are irrevocable. For as you were once disobedient to God, yet have now obtained mercy through their disobedience, even so these also have now been disobedient, that through the mercy shown you they also may obtain mercy. For God has committed them all to disobedience, that He might have mercy on all. - Romans 11:11-32
http://www.biblegateway.com/passage/?search=Romans11:11-32&version=NKJV
What? Continue what with Israel? What kind of strange postponement teaching is that? There is no such thing. Who are these Jews that you say are going to be grafted back in when they were never in? They were not born yet so how do you think they were cut off and can be grafted back?
The reason you're having a hard time understanding what I'm saying is that you don't understand the difference between God's corporate relationship between Himself and Israel (a nation) and God's personal relationship with each member of the Body of Christ (an organism).
If someone is born to a Jewish family, they are automatically a Jew, and are inherently part of the Nation of Israel, because their relationship with God is a corporate one.
But if someone is born to a Christian family, they are not automatically a Christian, because the individual does not have a relationship with God, as the relationship just be personal, not corporate.
When God is done with the Body of Christ, He will continue what He started in Acts 2 (See verse 16 for comprehension).
I am showing you the meat of the word, but you are lactose intolerant, not even able to consume the milk.