Genesis 1:28

²⁸ And God blessed them, and God said unto them, Be fruitful, and multiply, and replenish the earth, and subdue it: and have dominion over the fish of the sea, and over the fowl of the air, and over every living thing that moveth upon the earth.

Spreading themselves

'Spreading themselves on the earth,' as in Genesis 8:17, signifies the internal self operating on the external.