Church ministers before they are ministers go to school to become ministers.
They attend seminaries which are institutions established by the political hierarchy of the churches in their prospective denominstions.
At seminaries, they are rehearsed in the doctrines of the churches they belong to.
The Bible is explained to them in the interpretation to that doctrine which their church adheres.
Other curriculum is written by ordinary men who further whatever doctrine is in favor.
Who publishes these books?
Who created the doctrine?
Who funds the seminaries?
How would you even know, if some satanic, subversive philanthropist taught your minisyer all he is going to teach you?
Just read the Bible by yourself