We ought to have faith in God the Saviour, Jesus Christ, because that
is faith in the visible God in Whom is the Invisible; and faith in the
visible God, Who is at once Man and God, enters into man. For while
faith is spiritual in essence it is natural in form, for everything
spiritual, in order to be anything with a man, is received by him in
what is natural.
--_True Christian Religion, n._ 339
Man's conjunction with the Lord is not with His supreme Divine Being
itself, but with His Divine Humanity, and by this with the supreme
Divine Being; for man can have no idea whatever of the supreme Divine
Being of the Lord, utterly transcending his thought as it does; but of
His Divine Human Being he can have an idea. Hence the Gospel according
to John says that no one has at any time seen God except the
only-begotten Son, and that there is no approach to the Father save by
Him. For the same reason He is called a Mediator.
--_Arcana Coelestia, n._ 4211