'Eternal Life' in the Bible

(the life also was manifested, and we have seen, and do testify, and declare to you that eternal life, which was with the Father, and was manifested to us;)

And this is the promise which he has promised us, even eternal life.

Whoever hates his brother, is a murderer: and you know that no murderer has eternal life abiding in him.

And this is the testimony, that God has given us eternal life: and this life is in his Son.

I have written these things to you that believe on the name of the Son of God, that you may know that you have eternal life, and that you may believe on the name of the Son of God.