Translation
And this is the testimony, that THEOS has given us eternal life and this life is in HIS SON.
Paraphrase
Herein lies the authentication of the evidence – THE CREATOR AND OWNER OF ALL THINGS has done everything necessary to grant us eternal living-quarters with Him which are made possible by what HIS CO-REGENT, Jesus did.
THE FINAL EVIDENCE IS OUR SALVATION
The authenticating confirmation that Jesus is who the Bible says He is comes from the transformed lives of God’s followers. We are witnesses to this world of what Jesus can do, which proves who He really is. Not only so, but we are the primary witnesses, nature is a secondary witness. What a high privilege it is to be the primary witnesses and the confirming evidence to the saving power of God!