***Protestants cant even agree among themselves on matters of essential Christian doctrine, yet they all profess to believe in the Bible alone.***
Actualy, almost all protestant churches agree on the same doctrines for Salvation. It is only the irrelivant things that causes some to separate from others.
The ONE important thing they DO agree on is...”Believe on the Lord Jesus Christ and thou shall be saved!”
Jesus answered, The work of God is this: to believe in the one he has sent.