Passage
The one who does not love does not know God, because God is love.
The one who does not love does not know God, because God is love.
1 John 4:6 We are from God. The one who knows God hears us; the one who is not from God does not hear us. From this we know the spirit of truth and the spirit of error.
1 John 4:7 Beloved, let us love one another, for love is from God; and everyone who loves has been born of God and knows God.
1 John 4:8 The one who does not love does not know God, because God is love.
1 John 4:9 By this the love of God was manifested in us, that God has sent His only begotten Son into the world so that we might live through Him.
1 John 4:10 In this is love, not that we have loved God, but that He loved us and sent His Son to be the propitiation for our sins.
The verse centers on "does" and "love". It is saying that the verse draws attention to "does" and "love", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 7's "Beloved let us love one another for..." into verse 9's "By this the love of God was...", so "does" 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 "does" and "love" with trust shaped by these words, not by a vague optimism outside the passage.