Deane Galbraith, “Whence the Giant Jesus and his Talking Cross? The Resurrection in Gospel of Peter 10.39–42 as Prophetic Fulfillment of LXX Psalm 18.” New Testament Studies 63.3 (July 2017): 473–91.
The curious resurrection account in the Gospel of Peter (10.39–42) is not simply the author’s creative innovation, but is based on a Christocentric interpretation of LXX Ps 18.1–7. The Gospel of Peter’s unusual description of Jesus’ exit from the tomb, whereupon he expands gigantically so that his head enters heaven (GPet 10.39–40), derives from an early Christian interpretation of LXX Ps 18.5c–7. The following conversation between God and the glorified cosmic cross (GPet 10.41–2) derives from a Christocentric interpretation of LXX Ps 18.2. In addition, the cross’s verbal affirmation that it had preached to the dead (GPet 10.42) follows from a literalising yet Christocentric reading of LXX Ps 18.2b.