`Christianity refuses to be proved first and practiced afterwards: its practice and its proof go hand in hand,' wrote I. R. Illingworth.
The sermons of a certain preacher were magnificent, but his life was so inconsistent with his profession that, when he was in the pulpit, his congregation wished he would never leave it; and, when he was out of the pulpit, they wished he would never enter it again.
(1 Cor. 9. 27; Col. 2. 6)