1 John 5:13
John sounded rather, presumptuous...
We who believe in Him HAVE eternal life in us, not by our presumption but by His Promise.
Yes he did. He just had supreme confidence, that God would do what He promised, save us from our sins.
Those of us alive today, can have the same confidence in God. Those who don't, are usually out there trying to establish their own righteousness. In a way, I guess I can understand, because I was doing the same thing. No more, however. 😀