I like how the abundant life is explained here, from RHM, used by permission:
I believe that Christian growth is not change in the sense of becoming something you are not, but of growing into what and who you already are. If you were crucified with Christ and are a new creation, a new creature, then the path ahead is to find out and grow in who you are now, not to grow out of who you used to be in order to become something better. “Better” has arrived! A baby does not become more human as he reaches adulthood; a Christian does not become more Christian as his years increase. He was born a perfect Christian and is growing into what and who he is, increasingly becoming “mature in Christ.” That’s why you’ve got to know who you became at new birth. You’ve arrived! And that’s your starting point.
Colossians 1:27 To them God has chosen to make known among the Gentiles the glorious riches of this mystery, which is Christ in you, the hope of glory. 28 He is the one we proclaim, admonishing and teaching everyone with all wisdom, so that we may present everyone fully mature in Christ. 29 To this end I strenuously contend with all the energy Christ so powerfully works in me.
“Now before the feast of the passover, when Jesus knew that his hour was come that he should depart out of this world unto the Father, having loved his own which were in the world, he loved them unto the end. ” | John 13:1