ASV notes on Genesis 1:29-31
God made everything and gave it to man by the words He said, it became a heavenly law. At that time there were no physical evidence of the trees and plants, animals and man, all were in the spiritual and perfect. And in the spiritual realm God saw it and validated it. God gave plants and fruit for food, there were no need to kill, the life was forever and the earth was rich and big enough as the earth still is today.