What is the best safe-guard against false teaching? Beyond all doubt the regular study of the word of God, with prayer for the teaching of the Holy Spirit. The Bible was given to be a lamp to our feet and a light to our path. (Psalm. 119:105.) The man who reads it aright will never be allowed greatly to err. It is neglect of the Bible which makes so many a prey to the first false teacher whom they hear.
They would have us believe that “they are not learned, and do not pretend to have decided opinions.” The plain truth is that they are lazy and idle about reading the Bible, and do not like the trouble of thinking for themselves. Nothing supplies false prophets with followers so much as spiritual sloth under a cloak of humility.
~ J.C. Ryle
Expository Thoughts on the Gospels: Matthew, [Carlisle, PA: Banner of Truth, 1986], 68, 69.