"There is no good tree that bears bad fruit, nor a bad tree that bears good fruit. 44 Every tree is known for its fruit: figs are not picked from the thorns, nor are grapes harvested from the bush. 45 The good man out of the good treasure of the heart brings out the good, and the wicked, out of the bad brings out evil, for out of the abundance of the heart his mouth speaks "(Luke 6: 43-45).

Therefore, we will know the prophet by what he speaks. What comes out of his mouth will give him away. He may, in every sense, appear clean and honest on the outside, but if deceit and falsehood are in his heart, this false teaching, false prophecy and other perversions of the truth will come out of his mouth. The fruit of a vine is the figs. The fruit of a grape is grapes.

The fruit of a prophet is his prophecy.