Charles Ellicott Commentary Psalms 104:22

"The sun ariseth, they get them away, And lay them down in their dens." — Psalms 104:22 (ASV)

Lay them down. —With sunrise all is changed. The Wild animals, with their savage instincts, give way to man with his orderly habits and arranged duties. The curse of labour, on which the account in Genesis dwells, is here entirely out of sight, and instead there appears the “poetry of labour.” And if all sense of the primal curse has disappeared, the later curse, which lies so heavy on the modern generations of overworked men,

“Who make perpetual moan,
Still from one labour to another thrown,”

has not appeared. The day brings only healthy toil, and the evening happy rest.