How do we know that the Bible is authoritative?

The authority of Scripture is affirmed by its divine inspiration. Jesus declared in John 7:16 that His doctrine was not His own but from the One who sent Him. This shows that the teachings of Jesus, and thus Scripture, originate from God Himself. Additionally, 2 Timothy 3:16 states that all Scripture is God-breathed and therefore profitable for teaching, reproof, correction, and instruction in righteousness. The consistency and fulfillment of prophecies throughout the biblical narrative further corroborate its authority and divine origin. Hence, the Bible is recognized as the ultimate source of truth and guidance for Christians.