'Itself' in the Bible

So God said, “Let the earth sprout [tender] vegetation, plants yielding seed, and fruit trees bearing fruit according to (limited to, consistent with) their kind, whose seed is in them upon the earth”; and it was so.

He put them into the care of his servants, every herd by itself, and said to his servants, “Go on ahead of me, and put an interval [of space] between the individual herds.”