No man cometh to the Father.

No man cometh to the Father. This is an explanation of the former statement; for he is the way, because he leads us to the Father, and he is the truth and the life, because in him we perceive the Father. As to calling on God, it may indeed be said, with truth, that no prayers are heard but through the intercession of Christ; but as Christ does not now speak about prayer, we ought simply to understand the meaning to be, that men contrive for themselves true labyrinths, whenever, after having forsaken Christ, they attempt to come to God. For Christ proves that he is the life, because God, with whom is the fountain of life, (Ps. 36:9,) cannot be enjoyed in any other way than in Christ. Wherefore all theology, when separated from Christ, is not only vain and confused, but is also mad, deceitful, and spurious; for, though the philosophers sometimes utter excellent sayings, yet they have nothing but what is short-lived, and even mixed up with wicked and erroneous sentiments.

Calvin Commenting on John 14:6