To get an idea of this, you might picture a sailboat on a lake. The Biblical writers were carried along by the Holy Spirit just as the wind fills a sailboat's sails and carries it across the water. We also have the word of Jesus Christ Himself regarding the Bible. Jesus, being God, can never lie to us, and his Word is the final authority on the Bible. Because of this, you can have confidence in God's Word.
False teachers are aggressive recruiters and can often be very convincing.
Sometimes easy to get fooled. Pray, seek the Lord for His insight, talk with your Pastor, Youth Pastor, or other church leader, and study the Bible to make sure that a particular message or teaching lines up with Gods Word. The Doctor is not a real doctor. Unfortunately, he was forcibly removed from school after he attempted to perform exploratory surgery on a copy of the Magna Carta .