Tertullian

But so did circumstances require him to "become all things to all, in order to gain all; " "travailing in birth with them until Christ should be formed in them; " and "cherishing, as it were a nurse," the little ones of faith, by teaching them some things "by way of indulgence, not by way of command"-for it is one thing to indulge, another to bid-permitting a temporary licence of re-marriage on account of the "weakness of the flesh," just as Moses of divorcing on account of "the hardness of the heart.