Musar zu Dewarim 21:16

When Moses (in his parting address to the Jewish people in פרשת וזאת הברכה) wanted that his blessing should apply to the people of Israel, he "awoke," or activated the six "pillars." The word אשדת in 33,2 is to be read as two words אש דת. The letters in those two words represent the first letters each of the four pillars אמת-שלום-דין תורה. The other two "pillars" חסד-עבודה are mentioned by Moses a little while later in verse 8 where Moses speaks of תמיך ואוריך לאיש חסיד"ך, referring to the tribe of Levi. Moses goes on to say in verse 10: ישימו קטורה באפך. We know that the choicest of all sacrifices i.e. עבודה is the incense, קטורת. At the very end of his blessings (verse 26), Moses speaks of רכב שמים בעזרך, that with Israel's (i.e. Yeshurun, Israel in its most ideal state) help G–d "rides" the heavens. When Isaiah 66,1 has G–d describe the Heaven as His throne, this is a reference to "G–d riding." When Moses says in 33,25 at the end of the blessings: וכימיך דבאך, "Your strength corresponds to Your days," this is an allusion to the six days of Creation. The six pillars are also called days. Torah is called "day," as we know from Exodus 19,1 where Israel's arrival at Sinai- the source of Torah- is described as occurring ביום הזה, "On 'this' day they arrived in the desert of Sinai." Rashi comments that the reason the Torah employs the words ביום הזה, "on this day," instead of the more appropriate ביום ההוא, "on that day," is to urge us to love the words of Torah as dearly to-day as on the day they were first received thousands of years ago. We know that עבודה is called "day" because the Torah (Leviticus 7,38) writes in connection with the service in the Temple: ביום צוותו, from which we derive that the service has to be performed by day. The connection between the pillar גמילות חסדים and "day" is found in Psalms 42,9: יומם יצוה ה' חסדו, "May G–d command His kindness by day." Our sages (Chagigah 12b) say that anyone who is preoccupied with Torah study at night will have a thread of G–d's kindness extended across to him from the day. We know that the pillar דין is related to "day" from Deut. 21,16: והיה ביום הנחילו את בניו, "On the day he will transmit his estate to his sons as an inheritance, etc." Judgments are not handed down at night. The pillar אמת is the integration of two opposing forces. This corresponds to the concept "day" which is the harmonious blending of opposites i.e. evening and morning into a single unit (Genesis 1/5).

Alternatively one can explain the verse, “When a man has two wives, one beloved, etc.,” in this way: The “beloved wife” refers to Machalas, who appears to men arrayed in finery, continually engaged in dancing and laughter. The “hated wife” refers to the evil Lilis, who is perpetually immersed in wailing and weeping. The passage continues, “He may not give preference to … the firstborn son who was born from his proper wife” (Devarim 21:16). (That is, if he stumbles with his first drop his son from his proper wife will not have the power to overcome the demons and spirits born from his wasted seed.) That is why one must be very careful to cling to his wife at the very least with his first drop. If a man has already stumbled in this iniquity, Heaven forbid, he should examine what we have written in Chapter Two and later on in Chapters Sixty-nine and Seventy. Then let him be swift to repent and all will be well with him, selah.