686. He opened the discussion saying, "A song of ascents for Solomon. Unless Hashem builds the house, they who build it labor in vain, unless Hashem keeps the city, the watchman stays awake in vain" (Tehilim 127:1). HE QUESTIONS, Did Solomon then say this praise when he built the Temple? HE ANSWERS, It was not so, but rather King David said it for his son, King Solomon, when Natan the prophet came to him and told him about Solomon that he would build the Temple. Afterwards King David showed his son, Solomon, the form of the Temple. When David saw the form of the Temple and all its trappings, he recited praise for Solomon his son, and said, "Unless Hashem builds the house... "
687. Another explanation for, "A song of ascents for Solomon." It MEANS to the King that the peace is His, THAT IS ZEIR ANPIN. This song is a song and praise above all the other songs, and this song rises above all of them. "Unless Hashem builds the house," MEANING King David saw all these seven pillars, WHICH ARE CHESED, GVURAH, TIFERET NETZACH, HOD, YESOD AND MALCHUT OF ZEIR ANPIN, upon which this house, MALCHUT, stands, for they stand row by row in order to build this house. Above them all stands the Master of the house, THAT IS BINAH, who goes over them and gives strength and courage to each and every one accordingly.
688. In reference to this, David said, Unless the King, that the whole peace is His, WHO IS BINAH, who is the landlord, build the house, "they who build it labor in vain." These are the pillars CHESED, GVURAH, TIFERET NETZACH, HOD, YESOD AND MALCHUT OF ZEIR ANPIN who will build this house. "Unless Hashem keeps the city," that is, the King that the whole peace is His, WHO IS BINAH, "the watchman stays awake in vain," who is a pillar, upon which the world, MALCHUT, is built. What is it? It is the Righteous, NAMELY YESOD OF ZEIR ANPIN, who watches over the city, MALCHUT.
689. Joshua stood constantly and guarded the Tabernacle that Moses made, WHICH IS MALCHUT OF THE ASPECT OF MOCHIN OF THE SIX ENDS. It could be guarded only by him, for he is called 'a youth,' WHICH IS THE ASPECT OF METATRON, as it is written, "But his servant Joshua, the son of Nun, a young man, did not depart out of the tent" (Shemot 33:11). Afterwards, this Tabernacle was guarded only by another youth, as it is written, "And the child Samuel ministered" (I Shmuel 3:1), because the Tabernacle can be guarded only by a youth. Who is this guard? He is the one who guards the SUPERNAL Tabernacle, WHICH IS MALCHUT OF THE ASPECT OF MOCHIN OF THE SIX EXTREMITIES, who is called so BY THE NAME 'youth,' who is Metatron.
690. Guarding you, supernal Holy Ones, is not like the guarding of the Tabernacle, but guarding you is like the keeping of the Temple. The Holy One, blessed be He, alone guards it, as it is written, "Unless Hashem keeps the city, the watchman stays awake in vain." Similarly, all the time that the righteous are going on the road, the Holy One, blessed be He, guards them constantly, as it is written, "Hashem shall preserve your going out and your coming in" (Tehilim 121:8).
691. They went after him and escorted him three miles, and then returned their way. They declared about him, "For He shall give His angels charge over you, to keep you in all your ways. They shall bear you up in their hands... " (Tehilim 91:11). "Let your father and your mother be glad, and let her who bore you rejoice" (Mishlei 23:25).