Dominion here is the mastery of consciousness over its own lower creatures, the whole descending scale of life within a single body. The fish of the sea are the thoughts and impulses that stir in the deep waters of the emotions, below the surface, where feeling breeds without light. The fowl of the air are the higher mental energies, the swift ideas that fly through the atmosphere of the mind. To be fruitful and multiply is not merely to bear children but to increase the powers of the awakened self, filling the whole earth of the body with ordered life and bringing every reactive force under the rule of the I AM. The earth to be replenished and subdued is the physical form itself, the ground a person stands in and must learn to govern.
What is granted is the calm command of the higher self over every appetite and thought that moves inside a person, so nothing in the body runs wild against the will.
Fish of the sea: the thoughts and impulses breeding in the deep waters of the emotions
Fowl of the air: the higher mental energies, the swift ideas flying through the mind
Earth: the physical body, the ground a person stands in and must learn to govern
Every living thing: the whole scale of appetites and reactive forces the awakened self is to rule