C.F.W. Walther wrote “A man who does not yet have the true faith is self-seeking; he rejoices only over the good that befalls his own person. He does not concern himself with the his neighbor, least of all, concerning the health of his neighbor’s soul. At best, the faithless man rejoices over the fact that he himself should be saved; whether another is saved is an indifferent matter for him. A faithless man speaks like Cain: “Am I my brother’s keeper?” As soon as a man comes to truth faith, however, a great change then comes over him. From this moment on the reign of self-seeking is broken and love for his neighbor is kindled in him; accordingly, he now carries the desire in his heart that still all men might become such blessed people as he has become through faith. As, for example, when David had come, through true faith, to the certainty of the forgiveness of his sins and therefore said to God, “Then I will teach transgressors your ways, and sinners will return to you.” In the first chapter of the Gospel of John we read further: As Andrew found the Savior and received Him in faith, he then sought likewise to bring his brother Simon, who after this was given the name Peter by Christ, to Christ; and as Philip had recognized Jesus as the Messiah, then also likewise led his friend Nathaniel to Him. Whoever has come to true faith of the heart can in no possible way keep the great treasure he has found for himself alone, but rather thinks, as the hymn says:
