Of course you may have heard of "replacement theology" which to borrow the phrase, not to believe in that concept… but because the way Jewish truth is revealed, the latter Revelations by the great mystics – as what is happening is, we are going deeper and deeper into the Divine essence – therefore the truth, the ultimate truth, which the Rebbe revealed namely that all of creation, is an act of love and kindness, and the loving kindness is, that a. God gives us freedom of choice and b. He literally gives Himself to us in giving us the advice