And if the prophet is deceived and speaks a word, I, the Lord, have deceived that prophet, and I will stretch out my hand against him and will destroy him from the midst of my people Israel.
(Ezekiel 14:9 ESV)
How sure are we that we haven't been deceived by the message we preach?
I guess we can only be sure if it is rooted, grounded and saturated by the Bible, which is the truth (John 17:17)