Why Christians Believe the words of Paul, John, Mathews, and others they were not messengers or Prophet of God?

the father of the modern science Scientist Sir,Alber instein even agreed whatever mentioned in bible is absalutely correct....even in bible its said that the earth is in sphere shape and hanging nowhere........even he was wonderd at the scientific things are mentioned in bible...... one of a religion's holy book was saying earth is like carpet.....