The command to bear seed after their kind was given to the trees alone. But the various sorts of grass reasoned, that if God had not desired divisions according to classes, He would not have instructed the trees to bear fruit after their kind with the seed thereof in it, especially as trees are inclined of their own accord to divide themselves into species. The grasses therefore reproduced themselves also after their kinds. This prompted the exclamation of the Prince of the World, "Let the glory of the Lord endure forever; let the Lord rejoice in His works."