1 John 5:5-13
Chapter 5
This is the one who came by water and blood—not just water, but water and blood. And the Spirit also testifies to him, for the Spirit is truth.
There are, then, three witnesses:
the Spirit, the water, and the blood, and the three agree.
If we accept human testimony, the testimony of God is greater; for this is the testimony of God that he has testified to his Son.
If you believe in the Son of God, you have God’s testimony in you. But those who do not believe make God out to be a liar, because they do not believe his testimony about his Son.
And this is the testimony: God gave us eternal life, and this life is in his Son.
Whoever has the Son has life; whoever does not have the Son of God does not have life.
Keep yourselves from idols
I write these things to you so that you may know that you have eternal life, you who believe in the name of the Son of God.

Commentaries
Conclusion.
John’s letter highlights the core of Christian revelation. Through faith, which is the work of the Holy Spirit, we Christians experience the joy of knowing we are loved infinitely and tenderly. We recognize that all love comes from God the Father, who revealed himself through Jesus. We believe and understand that love is the beginning and the end of everything. Now, one remains in love only by “living as he lived” (2:6). Jesus is the model and source of our love. With the help of his Spirit, he empowers us to love our brothers and sisters as he loved us, through service and selfless love even unto death.