Passage
By this, love has been perfected with us, so that we may have confidence in the day of judgment, because as He is, so also are we in this world.
1 John 4:17 (LSB)
Nearby Context
1 John 4:15 Whoever confesses that Jesus is the Son of God, God abides in him, and he in God.
1 John 4:16 And we have come to know and have believed the love which God has in us. God is love, and the one who abides in love abides in God, and God abides in him.
1 John 4:17 By this, love has been perfected with us, so that we may have confidence in the day of judgment, because as He is, so also are we in this world.
1 John 4:18 There is no fear in love; but perfect love casts out fear, because fear involves punishment, and the one who fears is not perfected in love.
1 John 4:19 We love, because He first loved us.
Study Lenses
The verse centers on "world", "love", "been", "perfected", "confidence", and "judgment". It is saying that the verse draws attention to "world" and "love", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 16's "And we have come to know and..." into verse 18's "There is no fear in love but...", so "world" and "love" 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 "world" and "love" with trust shaped by these words, not by a vague optimism outside the passage.