This term, “knowledge,” raises human sexuality above the level of animals to the level of persons. Knowledge refers to the deepest essence of married life. In becoming one flesh, both men and women acquire knowledge through the body. A husband and wife come to “know” the meaning of their bodies. In a unique way, the woman is given to the man to be known, and he is given to her. This experience of the gift mysteriously makes them one, without blurring their individuality.