This is the law of the burnt-offering...which the L-rd commanded Moses on Mount Sinai, on the day that He commanded the Children of Israel to offer their sacrifices (Leviticus 7:37-8)
From these verses, Maimonides concludes that the proper time for bringing sacrifices is during the day. Nonetheless, he continues, it is permissible to burn any portions of the animal that were not consumed during the daytime throughout the night. Similarly, the Jew's mission in life is to "sacrifice" his animal soul - his desire for physical pleasures - and transform it into holiness. Optimally, this type of service is to be done "in the daytime," when the Jew's connection to G-d is fully revealed. Nonetheless, if our sins have caused us to enter a state of spiritual "night," our service of G-d must continue, for this in itself will dispel the darkness and transform it into light. (The Lubavitcher Rebbe, Bechukotai, 5749)
And the priest shall put on his linen garment (Lev. 6:3)
Rashi comments, "His garment (mado) should befit his stature (midato)." The service of the high priest who performs his duties while wearing the garment of an ordinary priest is invalid. A person must always behave in a manner befitting his stature. The higher up one is, the more is required of him. (Yalkut Eliezer)
And he shall lift up the ashes left from the burnt-offering which the fire consumed on the altar (Lev. 6:3)
A person wishing to witness a fiery, all-consuming service of G-d need not search among the elite; let him better look among the simple Jews who serve G-d with all their heart, for there he will find a true, holy fire. (The Magid of Mezerich)
A fire shall continully be kept burning upon the altar; it shall not go out. (Lev. 6:6)
A person who studies Torah with a friend awakens an eternal G-dly fire. "It shall not go out" - this merit will stay with him forever. (Hayom Yom)
