57. As the living Father hath sent me--to communicate His own life.
      and I live by the Father--literally, "because of the Father"; My life and His being one, but Mine that of a Son, whose it is to be "of the Father." (See Joh 1:18; 5:26).
      he that eateth me, . . . shall live by me--literally, "because of Me." So that though one spiritual life with Him, "the Head of every man is Christ, as the head of Christ is God" (1Co 11:3; 3:23).

JFB.