How do we know that Scriptures are the word of God?

The confidence in the Scriptures as the word of God stems from their divine inspiration, conveyed clearly in 2 Timothy 3:16, which states that all Scripture is given by inspiration of God. This means that the holy men who wrote the Scriptures were moved by the Holy Spirit, ensuring that their writings reflect God's truth. Further evidence of this can be found in 2 Peter 1:20-21, where it specifies that prophecy does not originate from human will, but from God, reinforcing the authority and truthfulness of Scripture as the foundation of faith for believers.