The light initially spreads and emerges from the Creator as light of Ḥokhma, which is the entirety of its life force belonging to that emanated being. It incorporates the first level of the will to receive and is called the first expansion, or the first level. Subsequently, a will of giving prevails in that light. The prevailing of this will draws out light of ĥassadim from the Creator, which is called the first prevailment, or the second level (Talmud Eser Sefirot, v. 1, Q & A 69).
Sources
A