Bible Verses About Warfare of Saints: The world

These thinges haue I spoken vnto you, that in me ye might haue peace: in the world ye shall haue affliction, but be of good comfort: I haue ouercome the world.

For all that is borne of God, ouercommeth this world: and this is that victorie that hath ouercome this world, euen our faith.

Who is it that ouercommeth this world, but he which beleeueth that Iesus is that Sonne of God?