17 All good 1giving and every perfect 1agift is from babove, coming down from the 2Father of lights, with whom is no 3cvariation or shadow cast by turning.
172 Lights here refers to the heavenly luminaries. The Father is the Creator, the source, of these shining bodies. With Him there is no shadow cast by turning (in contrast to the situation with the heavenly orbs, where the moon waxes and wanes by its revolving, and the sun can be eclipsed by the moon), for He is not variable, not changeable. As such, He is incapable of being tempted by evil, nor does He tempt anyone.

