Matthew 7:16

Tertullian The Prescription Against Heretics

Persons are still living who remember them,-their own actual disciples and successors,-who cannot therefore deny the lateness of their date. But, in fact, by their own works they are convicted, even as the Lord said.[319]

Archelaus Acts of the Disputation with the Heresiarch Manes

But just as, when a man desires to make any purchase, he does not produce the money unless he first ascertains by tasting the object whether it is of a dry or a moist species, so I shall not admit to you that the tree is evil and utterly corrupt, unless the quality of its fruit is first exhibited; for it is written, that "the tree is known by its fruits."[146]