The Very First Blessing of God

God first created everything; then He made Adam, then He took Eve out of Adam and blessed them saying, “Be fruitful, and multiply, and replenish the earth, and subdue it: and have dominion over the fish of the sea, and over the fowl of the air, and over every living thing that moveth upon the earth.” (Genesis 1:28 KJV)
Be fruitful and multiply!
Then how can two women or two men multiply? ///