¹⁵ Beware of false prophets, which come to you in sheep's clothing, but inwardly they are ravening wolves.

¹⁶ Ye shall know them by their fruits. Do men gather grapes of thorns, or figs of thistles?

¹⁷ Now I beseech you, brethren, mark them which cause divisions and offences contrary to the doctrine which ye have learned; and avoid them.

4 Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world.

¹¹ But now I have written unto you not to keep company, if any man that is called a brother be a fornicator, or covetous, or an idolator, or a railer, or a drunkard, or an extortioner; with such an one no not to eat.