You’re right. Like the Bereans we should be “searching the Scripture daily, to see if those things were so”. We will not be deceived as long as we follow God’s Word. Maranatha!
Trust but verify...as it is said...and that goes for even the best of teachings and Pastors who might teach...or literature we might read. God reveals in His own good time...and some things we will never know this side of heaven...better it is to apply what we do know and understand as we walk with Him thru this world.