God has created man. The first two people heard God’s command for mankind. They require food to live. The Lord determines man’s menu. These are the fruits that hang from the trees and the plants that give seed. We can think of the latter as grains, among other things.
29 Et Dieu dit: Voici, je vous donne toute herbe portant de la semence et qui est à la surface de toute la terre, et tout arbre ayant en lui du fruit d'arbre et portant de la semence: ce sera votre nourriture.