Psalms 104:20

“Thou makest darkness, and it is night - Thou hast made arrangements for the return of night - for the alternations of day and night. The Hebrew word rendered “makest,” means “to place;” and the idea is, that God constitutes the darkness, or so disposes things that it occurs. Wherein all the beasts of the forest - The margin is, “the beasts thereof do trample on the forest.” The reference is to the beasts which seek their prey at night. Do creep forth - The Hebrew word used here means properly “to creep,” as the smaller animals do, which have feet, as mice, lizards, crabs, or as those do which glide or drag themselves upon the ground, having no feet, as worms and serpents. Genesis 1:21,…”

“Darkness - Which succeeds the light by virtue of thy decree. Psalms 104:21”

“104:20-23 Cycles of darkness and dawn mark the days on earth.”

“makest: Psa 74:16, Psa 139:10-12; Gen 1:4, Gen 1:5, Gen 8:22; Isa 45:7; Amo 1:13 of the forest do creep forth: Heb. thereof do trample on the forest Psalms 104:21”