True to his promise to “make every effort” (v. 15) to remind his readers about the validity of Christ’s return, Peter offers them two verifications of that claim. He’s already reminded them about his own eyewitness account of the transfiguration. Now he puts a second credible source of authority on the table—the Old Testament Scriptures. In these verses Peter refers to the Scriptures variously as “the prophetic word” (v. 19), “prophecy of Scripture” (v. 20), and “prophecy” (v.