Mishnah Sanhedrin on the Mold of the First Adam

"Therefore was man created singly, to teach you that whoever destroys a single life from Israel is considered by Scripture as if he had destroyed an entire world; and that whoever preserves a single life from Israel is considered by Scripture as if he had preserved an entire world. [...]

"And to teach the greatness of the Holy One, Blessed is He: For a man mints many coins from one mold, and they are all similar to one another; but the King of kings, the Holy One, Blessed is He, minted all men from the mold of the First Adam, and not one of them is like his fellow man. Therefore each and every one is obligated to say, 'For my sake was the world created'."

-- Mishnah, Sanhedrin 4:5


"ISRAEL" - this is Metatron on the Spiritual plane, about whom it is said, "Your name is Jacob. Your name shall no longer be called Jacob, but Israel shall be your name." (Genesis 35:10).

"AN ENTIRE WORLD" - this is Metatron on the Physical plane, about whom it is said, "the whole earth is full of His glory." (Isaiah 6:3).

"THE MOLD OF THE FIRST ADAM" - this is Metatron on the Astral plane, about whom it is said, "and on the likeness of the throne, was a likeness like the appearance of a man upon it above." (Ezekiel 1:26).  

Midrash Rabbah Ruth on YHVH and His People Israel

"Rabbi Shim'on bar Yochai taught: 'God, your God am I' (Psalms 50:7). God is saying here, 'In actuality, I am known as God (Elohim) to all the world's inhabitants, but I have designated My Name (YHVH) specifically only in connection with My people Israel; for I am not called "the God of the nations", but only "the God of Israel".'"

-- Midrash Rabbah, Ruth 1.1