1 John 4:9
KJV
In this was manifested the love of God toward us, because that God sent his only begotten Son into the world, that we might live through him.
NIV
This is how God showed his love among us: He sent his one and only Son into the world that we might live through him.
“Only” means there is no other. “Begotten” means Jesus is the literal Son of God, and is one with the Father in essence and deity. Modern versions omit “begotten” which is a word of paramount significance in the Bible, especially for the sake of guarding against heresy. See notes on John 3:16.
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