The strain and burden of a great message of deliverance to men has again and again found the weak places in the faith and courage of the most devoted and heroic of those to whom it has been entrusted. Moses pleads under its pressure that another may be sent in his place, asking despairingly, “Why hast thou sent me?” Elijah prays for death. Mohammed passes years of despondency and hesitation under the sneers of those who scoff, “There goeth the son of Abdallah, w............