All of these worlds and everything that they contain are included in the tetragrammaton, the four-letter name of God, and in the tip [kotzo] of the letter yod. For the first world, Adam Kadmon, is incomprehensible [to humans], and is therefore hinted at only in the tip of the yod of God’s name. Hence, we do not mention it [Adam Kadmon] and speak only about four worlds, ABYA. The letter yod [in the tetragrammaton] is the world of Atzilut; the letter heh is the world of Beria; the letter vav is the world of Yetzira; and the [second] letter heh is the world of Asiya.

Worlds of Existence Sefirot (KaḤaV TuM) | Lights (YaḤNaRN) | Tetragrammaton Adam Kadmon (Primordial Man) | Keter | Yehida | tip of the yod 2. Atzilut (Emanation) | Ḥokhma | Ḥaya | yod 3. Beria (Creation) | Bina | Neshama | heh 4. Yetzira (Formation) | Tiferet | Ruaḥ | vav 5. Asiya (Action) | Malkhut | Nefesh | heh