But you are a chosen race, a royal priesthood, a holy nation, a people for God's own possession, that you may show forth the excellencies of him who called you out of darkness into his marvelous light:
Into his marvelous light ...  The marvelous light of God, in its fullness, is unapproachable  (1 Timothy 6:16); and yet it is into that very light that we are called.  The children of God are children of the light, or the day; and the sons of the evil one are children of darkness.