Passage
Whosoeuer confesseth that Iesus is the Sone of God, in him dwelleth God, and he in God.
Whosoeuer confesseth that Iesus is the Sone of God, in him dwelleth God, and he in God.
1 John 4:13 Hereby know we, that we dwell in him, and he in vs: because he hath giuen vs of his Spirit.
1 John 4:14 And we haue seene, and doe testifie, that the Father sent that Sonne to be ye Sauiour of the world.
1 John 4:15 Whosoeuer confesseth that Iesus is the Sone of God, in him dwelleth God, and he in God.
1 John 4:16 And we haue knowen, and beleeued ye loue that God hath in vs. God is loue, and he that dwelleth in loue, dwelleth in God, and God in him.
1 John 4:17 Herein is that loue perfect in vs, that we should haue boldnes in the day of iudgement: for as he is, euen so are we in this world.
The verse centers on "whosoeuer", "confesseth", "iesus", "sone", and "dwelleth". It is saying that the verse draws attention to "whosoeuer" and "confesseth", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 14's "And we haue seene and doe testifie..." into verse 16's "And we haue knowen and beleeued ye...", so "whosoeuer" and "confesseth" belong inside that flow. In 1 John context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "whosoeuer" and "confesseth" with trust shaped by these words, not by a vague optimism outside the passage.