'Itself' in the Bible

Then God said, "Let us make mankind in our image, to be like us. Let them be masters over the fish in the ocean, the birds that fly, the livestock, everything that crawls on the earth, and over the earth itself!"

God looked at the earth, observing how corrupt its population had become, because the entire human race had corrupted itself.

Jacob kept the lambs separate, facing the striped and entirely black ones that belonged to Laban's flock. He set his own herd by itself and would not let them be with Laban's flock.