Here are the reasons why I believe mine is:
1. The Bible is inerrant & inspired (Psalm 12:6)
2. The Bible has no major contraditions & errors proving its inerrancy (Psalms 33:11 & Proverbs 22:12, 19-21)
3. The Bible proved it's inspiration by the many fulfilled prophecies
4. And among those prophecies were messianic prophecies fulfilled in the life (Micah 5:2, Isaiah 7:14, 9:6, 53:1-4), death (Psalm 22:16, Isaiah 53:5-6, & Daniel 9:26), and resurrection of Christ (Psalms 16:10 & John 2:19-21)
5. The Apostles saw the resurrected Christ (Acts 1:11) and all but one died for what they saw.