Pin not your faith upon men’s opinions; the Bible is the touchstone. That there is such diversity amongst teachers is their fault, who should think all the same thing; but that this is so troublesome to you is your own fault, for neglecting your duty of trying all things by the word. Alas! you are in a miserable condition, if you have all this while relied on the authority of men in heavenly things. He that builds his faith upon preachers, though they preach nothing but truth, and he pretend to believe it, hath indeed no faith at all, but a wavering opinion, built upon a rotten foundation. Whatever, then, is taught you, you must go with it “to the law and to the testimony: if they speak not according to this word, it is because there is no light in them,” Isa. viii. 20.
– John Owen –
from The Duty of Pastors and People Distinguished; of Works, volume 13, pages 40-41