Kabbalah su Esodo 31:17

"Bereshit, in the beginning" (Genesis 1:1). This includes two fires ("trei esh"), which are the two flames [referred to in the blessing] "Blessed is the Creator of the lights of fire". And in this regard it is written (Song of Songs 2:5) "Sustain me with cakes (ashishot)", that is, with two fires (eishot). Why is 'sustain me' said in this context? This refers to the eves of the Shabbat, when an additional soul descends in order to support the lower Shechina in exile, of whom it is said (Amos 5:2) "Fallen, not to rise again [is the maiden of Israel.]" When Shabbat reaches its end, this additional soul leaves, of which it is written (Exodus 31:17) "[God was] refreshed (vayinafash)". [This is the meaning of ] vayinafash? As soon as it leaves, woe to the soul! (vay nefesh!), for nobody is left to support her. In such moments, she cries out to Israel "Support me with ashishot", that is, with lights of fires. What are these fires? Two Torahs, carved of fire, which are ELOHIM, the aspect of might. These are known as (Isaiah 54:13) "Teachings of the Lord," two lips of burning flames, or two apples out of which the spirit of the Messiah comes, of which is said (Isaiah 11:2) "The spirit of the Lord shall alight on him."