Zohar Ki Tetze
Those who connect to the secrets of the Torah with purity, inherit souls from Malchut of Atzilut, which is holy. Their souls merit to have 10 unified Sefirot because there’s no separation in the world of Atziluth. Others with a soul from the lower Malchut, don’t have the unification with the upper 9 sefirot of Light.
The unification of the parents is very important in the process of drawing higher soul to the child.
Man is the aspect of Zeir Anpin and the YHVH name יוד-הא-ואו-הא with 10 letters allows complete unification with the upper levels.
The letter Yod is also the aspect of Yessod that connects the upper nine with the lower one that is Malchut. The penis in the body is the aspect of Yessod. It’s connection to Malchut should be with purity to be able to draw the Light of the upper nine sefirot into the vessel of Malchut.
Impure sex draws negative forces that support and increase evil inclination, pulling the man and the woman to greater negativity and disconnection from the Light that can come from above through pure channels.
The penis is called in the Zohar as holy body part because of its ability to draw Light and higher souls, which is continuation of life in the world.
Yessod is the aspect of righteousness and foundation of Light and life for the world of Malchut. The penis should be holy and all sexual actions should be with love, unity and pure consciousness.
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