A chiasm is a literary structure where vocabulary of the first section of a passage is repeated in reverse order in the second. The center of the chiasm is typically the climax of the passage. In 2 Corinthians 4 the center and climax is “But having the same spirit of faith, according to what is written,”I BELIEVED THEREFORE I SPOKE,” we also believe, therefore we also speak” (2 Cor 4:13).