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. 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.
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.
1 John 4:11 Beloved, if God so loved us, we also ought to love one another.
1 John 4:12 No one has beheld God at any time; if we love one another, God abides in us, and His love is perfected in us.
The verse centers on "world", "only begotten Son", "love", "manifested", "sent", "might", and "live". It is saying that the verse draws attention to "world" and "only begotten Son", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 8's "The one who does not love does..." into verse 11's "Beloved if God so loved us we...", so "world" and "only begotten Son" 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 "only begotten Son" with trust shaped by these words, not by a vague optimism outside the passage.