Who then overcomes the world? Only he who believes that Jesus is the Son of God.
Who is he that overcometh the world,.... This question carries in it a strong affirmation, that no other person is the conqueror of the world: but he that believeth that Jesus is the Son of God? and this points out what that faith is which obtains the victory over the world; and shows that it is not that trust and confidence which has a man's...
Our apostle having spoken of the usefulness of faith in the former verse, that it overcometh the world, next discovers the object of this faith, which is this proposition, that Jesus is the Son of God. Who is he that overcometh the world, but he that believeth that Jesus is the Son of God? That faith which overcomes the world, is faith in the divinity and sonship of Jesus Christ.
The believer who trusts that Jesus is the Messiah is born of God and stands spiritually descended from Him, not by flesh but by the Spirit. It follows naturally that he who loves the Father must love the Father's children as well.
AI summary
Commenting on 1 John 5:1-5