LEV62 Do not extinguish the Altar’s fire. A person is blessed according to the degree that his deeds are pleasing in the eyes of Hashem. By fulfilling the mitzvah of tending to the Altar fires every day, the Kohanim caused Hashem to bless the natural fire in their bodies. That is, man is made of four basic elements: fire, air, water and dust. Fire is the main element, for through it man gained strength and is able to move and act. Therefore, of the four basic elements of the body, it is most important that blessing be present in this one.