"Salvation is not a theoretical salvation from some possible future evil, but a present salvation from a present and very real trouble.
To be born of God is to receive our life from Him, just as we receive life through birth from our earthly parents. But the new birth is a continuous process, and thus something that is ever present.
So it is that the Gospel has to do with eternal things, but eternal things in the present time. The trouble with people is that they regard eternity as only future, whereas eternity is past, present, and future. It has been, is, and is to be.