The Bible, both Old and New Testament, are the verbally inspired Word of God. The only written revelation from God to man. The Bible is without error and infallible in the original writings, and is the final authoritative rule of faith (doctrine) and conduct (practice) for mankind. (2 Timothy 3:15-17; 1 Thessalonians 2:13; John 17:17; 2 Peter 1:21)