1 John 5:19

19. We know Six times has the apostle pronounced this know. His religion is not a guess so, or a hope so, but a know so. And this know so arises from the witness in himself, (1 John 5:10;) namely, the divine witness of the divine three of 1 John 5:8. There is no uncertainty about it, though the world deny it; for the testimony of God is greater than that of men, 1 John 5:9; and the testifier is the divine Spirit, who is the very truth itself, 1 John 5:6.

In wickedness Rather, in the wicked one, as it is translated, the very same Greek word, in 1 John 5:18. So the regenerate are said to be in Christ; so in the next verse they are said to be in the true One. The Church is Christ’s mystical body, and into him every regenerate member is mystically embodied. And so in fearful contrast the unregenerate world lieth in the antichrist, Satan. Note on 1 John 2:15.