Charles Spurgeon Commentary 1 John 5:4

"For whatsoever is begotten of God overcometh the world: and this is the victory that hath overcome the world, [even] our faith." — 1 John 5:4 (ASV)

For whatsoever is born of God overcometh the world: and this is the victory that overcometh the world, even our faith.

And the apostle gives a description of what kind of faith it is that overcomes the world.

For whatsoever is born of God overcometh the world: and this is the victory that overcometh the world, even our faith (1 John 5:4).

This is the conquering weapon; one who truly believes in Jesus cannot be overthrown by the combined forces of the world, the flesh, and the devil. Remember the lesson that Haman learned when he contended in vain against Mordecai because Mordecai was of the seed of the Jews, and learn that those who belong to Christ shall, like Christ, be more than conquerors.