Kabbalah zu Schemot 3:4

Tosefta Why is "Noah Noah" (Gen. 6:9) written twice? Each and every righteous person in the world has two spirits. One stays in this world, while the other is in the World to Come. And so we find that the Holy One, blessed be He, named all the righteous twice: "Moses, Moses" (Ex. 3:4), "Jacob, Jacob" (Gen. 46:2), "Abraham, Abraham" (Gen. 22:11), "Samuel, Samuel" (I Shmuel 3:10) with the exception of Isaac. He is not named twice because when he approached the altar to be sacrificed, the soul that was within him in this world left him. And because it is said of Abraham, "blessed are You who resurrect the dead", so only the soul of the World to Come was returned to him. And that is why you shall find that the name of the Holy One, blessed be He, was not unified (on any righteous person in his lifetime). It was unified only on Isaac, because he was already considered as dead. He was like those who pass away from this world. The verse therefore states: "Behold, He puts no trust in His holy ones" (Iyov 15:15) because He does not unify His name on the righteous during their lifetimes.