In all is God!
However, according to Kabbalah, God gave a new soul, literally himself! for though it may function in a specific body, nonetheless as the Baal Shem Tov explains, all things which are essentially true, say 1+1=2, are in fact indivisible (so wherever you think about 1+1=2 it is the same rule of logic in all cases you are applying!) hence as God himself places himself in the Jew! hence God is completely present there! and as there is only one God! Hence, on a soul level all Jews are intrinsically one!