# Let the waters be filled with great numbers of living creatures

This is a command. By commanding that living creatures should fill the waters, God made them exist. Some languages may have one word that refers to all kinds of fish and sea animals. Alternate translation: "Let the waters be full of many living things" or "Let many animals that swim live in the oceans" (See: [[rc://en/ta/man/jit/figs-imperative]])

# let birds fly

This is a command. By commanding that birds should fly, God made them fly. (See: [[rc://en/ta/man/jit/figs-imperative]])

# birds

"animals that fly" or "flying things"

# the expanse of the sky

"the open space of the sky" or "the sky"