Old Testament Evidence Evidence abounds within the Old Testament that the prophets were God’s messengers and that their message was of divine origin. Consider the following key passages: EXODUS 4:10–16; 7:1–4 Warfield refers to the Exodus material detailing God’s commissioning of Moses and Aaron as “the fundamental passage” for determining what it meant for one to be a true prophet (נָבִיא, nāḇîʾ).1 The passages read: