If you give yourself to Scripture, you will feel comfort and all your concerns will be better, which otherwise you cannot control by any act or means of your own. After all, a merchant can bring himself, for the sake of gaining money and wealth, to leave house and home, wife and child, and risk his life for the sake of filthy lucre, and still have no sure promise or assurance that he will return home in health to wife and child; and yet he is foolhardy and rash enough to venture boldly into such danger without any promise whatsoever. Now, if a merchant can do that for money and riches, fie upon you, that we should not want to bear a little cross and still want to be Christians, even though besides we have in our hands the tree to which we cling against the waves, namely, the Word and the fine strong promises that we shall not be overwhelmed by the waves….
Now if the merchant … can muster up such courage to take upon himself … and suffer such peril, effort, and labor, we should be simply ashamed that we rebel against suffering and the cross, even though we know, in the first place, that God has appointed that we should suffer and that it cannot be otherwise. In the second place, we also know our promise and assurance, that, even though we are not such good Christians as we ought to be and are timid and weak both in life and faith, He will nevertheless defend his Word simply because it is his Word. (Luther’s Works, v.51, p.204-205)