In our Bible, we might ask, Why need Matthew, Mark, Luke, and John in the Gospels, why need the Acts of the Apostles, and the variety of writers in the Epistles, go over the same thing?
The Lord gave His word in just the way He wanted it to come. He gave it through different writers, each having his own individuality, though going over the same history. Their testimonies are brought together in one Book, and are like the testimonies in a social meeting. They do not represent things in just the same style. Each has an experience of his own, and this diversity broadens and deepens the knowledge that is brought out to meet the necessities of varied minds. The thoughts expressed have not a set uniformity, as if cast in an iron mold, making the very hearing monotonous. In such uniformity there would be a loss of grace and distinctive beauty…. — Selected Messages Book 1, p. 21-22