קבלה על בראשית 1:20

The fifth precept is found in the verse, "Let the waters swarm abundantly with moving creatures that have life" (Genesis 1:20). This verse contains three precepts. The first is to study the Torah; the second is to beget children: and the third is to circumcise a male child on the eighth day of life and remove the foreskin. It is necessary to study the Torah with great effort at all times, in order to better one's spirit and soul.

The sixth precept is to procreate. Because he who procreates and begets children causes that river to flow continuously. Its waters shall never fail and the sea shall be filled from all directions. New souls are renewed and shall come forth from that tree, and many hosts of heaven will multiply together with those souls. This is why it is written, "Let the waters swarm abundantly with moving creatures that have life."This refers to the sign of the holy covenant, the river that flows and comes forth, as its waters swell and move with swarms and innumerable souls for that living creature!

... For the bird of the skies will lead/bring the voice, and the masters of wings will tell a word” [Ec 10:20]. Here this [word] is YHVH, the central pillar ...