Passage
Behold, what manner of love the Father hath bestowed upon us, that we should be called the sons of God: therefore the world knoweth us not, because it knew him not.
Behold, what manner of love the Father hath bestowed upon us, that we should be called the sons of God: therefore the world knoweth us not, because it knew him not.
1 John 3:1 Behold, what manner of love the Father hath bestowed upon us, that we should be called the sons of God: therefore the world knoweth us not, because it knew him not.
1 John 3:2 Beloved, now are we the sons of God, and it doth not yet appear what we shall be: but we know that, when he shall appear, we shall be like him; for we shall see him as he is.
1 John 3:3 And every man that hath this hope in him purifieth himself, even as he is pure.
The verse centers on "called", "world", "behold", "manner", "love", "father", "hath", and "bestowed". It is saying that the verse draws attention to "called" and "world", so its meaning should be read from those terms before moving to application.
The next verse adds "Beloved now are we the sons of...", so "called" and "world" should be read forward into that movement. In 1 John context, the local focus is Christ, faith, and discipleship.
A plain takeaway is to answer the verse's own emphasis on "called" and "world" with trust shaped by these words, not by a vague optimism outside the passage.