Fearfully And Wonderfully Made

Because he is the work of his hands. He that framed the engine knows all the motions of it. God made us, and therefore no doubt he knows us; he saw us when we were in the forming, and can we be hidden from him now that we are formed? This argument he insists upon (v. 13-16): "Thou hast possessed my reins; thou art Master of my most secret thoughts and intentions, and the innermost recesses of my soul; thou not only knowest, but governest, them, as we do that which we have possession of; and the possession thou hast of my reins is a rightful possession, for thou coveredst me in my mother's womb, that is, thou madest me (Job 10:11), thou madest me in secret. - Matthew Henry