Everyone who believes that Jesus is the Messiah has been born from God. Everyone who loves the Father also loves his children.
We know that we love God's children when we love God by obeying his commandments.
To love God means that we obey his commandments. Obeying his commandments isn't difficult
because everyone who has been born from God has won the victory over the world. Our faith is what wins the victory over the world.
Who wins the victory over the world? Isn't it the person who believes that Jesus is the Son of God?
This Son of God is Jesus Christ, who came by water and blood. He didn't come with water only, but with water and with blood. The Spirit is the one who verifies this, because the Spirit is the truth.
There are three witnesses:
the Spirit, the water, and the blood. These three witnesses agree.
We accept human testimony. God's testimony is greater because it is the testimony that he has given about his Son.
Those who believe in the Son of God have the testimony of God in them. Those who don't believe God have made God a liar. They haven't believed the testimony that God has given about his Son.
This is the testimony: God has given us eternal life, and this life is found in his Son.