All Scripture is inspired and useful for wisdom unto salvation
2 Timothy 3:14–17 (ASV)
14But abide thou in the things which thou hast learned and hast been assured of, knowing of whom thou hast learned them; 15and that from a babe thou hast known the sacred writings which are able to make thee wise unto salvation through faith which is in Christ Jesus. 16Every scripture inspired of God is also profitable for teaching, for reproof, for correction, for instruction which is in righteousness: 17that the man of God may be complete, furnished completely unto every good work.
While Uong Nguyen was now a Christian, he still struggled to break free from his early indoctrination under communism—scripture for him was but a mere book of literature. But as he opened his heart to studying God's word as a manual for knowing God and living practically, he reflected on how God had miraculously preserved him in spite of the Khmer Rouge. This opened his heart to believe the miracles of Jesus.