1 John 5:1

1 John 5:1 says, Whosoever believeth that Jesus is the Christ is born of God: and every one that loveth him that begat loveth him also that is begotten of him.  John tells us that anyone who believes in Jesus Christ as their Savior and Lord is born of God.  This is the second birth by faith and not just our physical birth.  If we are to be a child of God, then we must be born again.  

Verse two adds, By this we know that we love the children of God, when we love God, and keep his commandments.  John says that we can know that we love others by loving God and keeping His commandments.  Even though the law of God cannot save us, we are expected to obey it because it is His law.  

Verse three continues, For this is the love of God, that we keep his commandments: and his commandments are not grievous.  John said that we show our love for God by keeping His commandments and that they are not grievous.  Following God's law as a Christian should not be seen as a burden but as an opportunity to show God's love to other people.  We cannot show the Holy Spirit indwelling us, but we can show that we obey God to the best of our ability.  

Verse four concludes, For whatsoever is born of God overcometh the world: and this is the victory that overcometh the world, even our faith.  John tells us that if we are a born-again follower of Christ that we can overcome the world by His power.  This is accomplished by putting our faith in Jesus Christ as our personal Savior and Lord.