Passage
For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
John 3:14 And as Moses lifted up the serpent in the wilderness, even so must the Son of man be lifted up:
John 3:15 That whosoever believeth in him should not perish, but have eternal life.
John 3:16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
John 3:17 For God sent not his Son into the world to condemn the world; but that the world through him might be saved.
John 3:18 He that believeth on him is not condemned: but he that believeth not is condemned already, because he hath not believed in the name of the only begotten Son of God.
The verse centers on "world", "only begotten Son", "believeth", "everlasting life", "loved", "gave", "whosoever", and "should". It is saying that the promised life is attached to believing, with the Son at the center of the sentence rather than human achievement.
The nearby context moves from verse 15's "That whosoever believeth in him should not..." into verse 17's "For God sent not his Son into...", so "world" and "only begotten Son" belong inside that flow. In Jesus Explains God's Saving Love, the local focus is new birth, eternal life, belief and unbelief, and God's saving love.
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.