'Eternal Life' in the Bible

(the Life has appeared; we saw it, we testify to it, we bring you word of that eternal Life which existed with the Father and was disclosed to us) ??3 it is of what we heard and saw that we bring you word, so that you may share our fellowship; and our fellowship is with the Father and with his Son Jesus Christ.

Now this is what he has promised you, eternal life.

Anyone who hates his brother is a murderer, and you know that no murderer has eternal life remaining within him.