405. "Let the waters swarm abundantly with moving creatures that have life..." (Beresheet 1:20). Rabbi Elazar said: These are the lower waters that produce living creatures (Heb. Nefesh), which correspond to those created by the upper WATERS. IN OTHER WORDS, JUST AS THE UPPER WATERS-BINAH - BRING FORTH THE SOULS OF THE MALE AND FEMALE PRINCIPLES, SO THE LOWER WATERS OF THE MALE AND FEMALE PRINCIPLES BRING FORTH THE SOULS OF THE RIGHTEOUS. These UPPER WATERS BRING FORTH supernal SOULS, THE MALE AND FEMALE PRINCIPLES, and these LOWER WATERS BRING FORTH SOULS OF the lower beings, THE SOULS OF THE RIGHTEOUS. Rabbi Chiya said: The upper brought forth the "moving creatures (lit. Nefesh) that have life." What is this? This is the soul of the first man, as it is written: "And man became a living soul" (Beresheet 2:7).
406. "And let birds fly above the earth..." (Beresheet 1:20) refers to the emissaries from above, THE ANGELS, who appear before human beings in the image of human beings. This is understood from the phrase, "Fly above the earth," WHICH MEANS THAT THEIR SHAPE IS SIMILAR TO THAT OF THE PEOPLE OF EARTH. There are other ANGELS who appear in spirit only, according to an awareness that human beings have acquired. THUS, THE PHRASE: "ABOVE THE EARTH" INDICATES THAT THESE EMISSARIES ARE CONCEIVED IN THE IMAGE OF MAN. THEY ARE DESCRIBED AS "BIRDS FLY ABOVE THE EARTH," SINCE THE EARTH IS THE SECRET OF MALCHUT.
407. Because of THEIR ABILITY TO CHANGE THEIR FORM INTO THE IMAGE OF MAN, it is not written of them, "after its kind," as it is of the other ANGELS FROM ZEIR ANPIN. Of these others, it is written, "And every winged bird after its kind" (Ibid. 21). Those WHICH COME FROM ZEIR ANPIN never change from their "kind" INTO THE SHAPE OF A HUMAN BODY as do the other ANGELS, of whom it is not written, "after its kind," AND OF WHOM IT DOES SAY, "AND LET BIRDS FLY ABOVE THE EARTH." You might say that ANGELS assume different forms among themselves, and it is indeed so. There are among them those who are different from the others. THERE ARE MANY DIFFERENT LEVELS AMONG THEM. This is why it is written, "And from thence it was parted" (Beresheet 2:10), ALLUDING TO THE WORLDS - BRIYAH, YETZIRAH AND ASIYAH OF SEPARATION - WHERE THE ANGELS ARE.