Nevertheless in God there is necessarily an idea,
which expresses the essence of this or that human body under the
form of eternity.Proof.--God is the cause, not only of the existence of this or
that human body, but also of its essence (I. xxv.). This
essence, therefore, must necessarily be conceived through the
very essence of God (I. Ax. iv.), and be thus conceived by a
certain eternal necessity (I. xvi.); and this conception must
necessarily exist in God (II. iii.). Q.E.D.