18. No man—"No one," in the widest sense.
hath seen God—by immediate gaze, or direct intuition.
in the bosom of the Father—A remarkable expression, used only here, presupposing the Son's conscious existence distinct from the Father, and expressing His immediate and most endeared access to, and absolute acquaintance with, Him.
he—emphatic; As if he should say, "He and He only hath declared Him," because He only can.