Not of God

The office of the pope isn’t in the bible. If a doctrine isn’t in the Bible, that doctrine is not of God, but of man. Mark 7.1-15. That is the problem with our religious world, there are too many false doctrines posing as the doctrine of God.
 
One cannot be saved following doctrines that not taught by the word of the Lord and neither can a person expect God to be pleased, because He will not be. 2 John 9-11. Matt 7.15-27.
 
The head of the church is Jesus Christ, and He doesn’t share that position with anyone. Eph 5.23. Col 1:18. Eph 1.22-23. However, men pay no attention to these bible truths and go ahead and established their own teaching about the head of the church. Romans 10.1-3. People believe that what the pope will say is truth and nothing could be farther from the truth. The word of God is the truth and when it speaks, you hear truth that will set you free. John 8.31-32.
 
How can a person pledge their life to that not authorized by the word of the Lord? If you believe in the pope, where is your bible authority? Give book, chapter and verse. 1 Peter 4.11 And no scriptures used out of context, please.