Here are strengthening words for days of storm and testing, and cheering words for nights dark and starless, and guiding words for times of mental perplexity and of moral peril. They come to us across distant centuries, but they meet precisely our modern needs. They are weighted with divine mysteries, but they chiefly concern human duties. They were addressed to members of a heavenly brotherhood, but they deal with the practical, earthly problems of employers and servants, husbands and wives, teachers and taught, rich and poor, of all who need encouragement to press on through sorrow to joy, through temptation and failure to strength and victory, through doubts and fears to assured faith and cloudless hope. They were written by men who had been companions of Christ, but they are his present messengers for all who yield to his Spirit and seek to do his will.