Verse 21.— I have not written unto you. It was not because they were ignorant of the truth that the Word was made flesh, but because they knew this as the truth, and that they were capable of discerning the differ­ence between the truth and a lie. If these false teachers or antichrists promulgated their heresies, they should be prepared to resist the same, and their utterances would be heresies if they denied that Jesus Christ had come in the flesh.