15 “Beware of false prophets, who come to you in sheep’s clothing, but inwardly they are ravenous wolves. 16 You will know them by their fruits. Do men gather grapes from thornbushes or figs from thistles” (Matthew 7:15–16, NKJV)?
Where have all the false teachers gone? They still exist despite those who say false doctrine is not sinful and does not risk one’s fellowship and future with God. Jesus warns us to be on guard for those who falsely claim to speak for God. They appear innocent as their deceitful message soothes the ear (Rom. 16:17-18). But we must test their fruit (their message) and not be fooled by appearances (John 7:24). When the teacher’s doctrine contradicts revealed truth, it is not sound doctrine (1 Tim. 6:3; 2 Tim. 1:13; Titus 2:1). Jesus said we would know false prophets (false teachers) by their fruit (v. 16). False teachers are identifiable by their “destructive heresies,” “destructive ways,” and “deceptive words” (2 Pet. 2:1-3). We know the false prophet by his false message. The false teacher’s bad fruit (false teaching) is not God’s word. It is fit for destruction (Matt. 7:17-20). We must test the teacher’s fruit (teaching) against “the will of My Father in heaven” (Matt. 7:21; Gal. 1:8-9; Jude 3-4; 1 John 4:1, 6; 2 John 9). The Lord is not telling us to judge the teacher’s sincerity but the accuracy of what he teaches. Does it accord with the will of the Father (the Scriptures, 2 Tim. 3:16-17) or the wisdom and will of men? Indeed, we will know them by their fruits (1 Thess. 5:21-22).