A few things are guaranteed when you are born again.
I'll list just 2.
One is that you are BORN, into God's Spirit.
This is to be born again. This is to become a "new creation in Christ".
So, can you stop being born?
By sinning, i.e. turning back away from God to a life in the flesh. That turning away by an act of disobedience is how Adam died to begin with.
And the reason you "abide" is...how can you not, if you are BORN?
Being born again, is to be in "spiritual Union" with God, and "ONE" with God and Christ.
This place "In Christ", is created by being Born into it, spiritually.
God does this for us, as "the Gift of Salvation".
For
some, who turn to Him. That's really as much as we can know. And this is not an either/or proposition, but both/and, with us working out our salvation together with He who works in us. It should be understood that, since Eden, God's been working on a plan, to
produce something, something great, something better than He began with even though everything He creates is good to begin with, rather than to just, almost reluctantly as some would seem to have it, save a portion of His otherwise worthless wretched creation.
Man was made for something
big, and man gives glory to God by reflecting that very glory in
himself. And that necessarily involves the will, to choose the Good to the extent we're able and
as we're able even as grace is continuously necessary to draw and aid and coax us along. and that's why we must remain in Him, that union, itself, involving a daily choice. The fact that we can turn away at any step is the very reason
why our own justice or righteousness or perfection is increased and achieved as we continue to walk with Him, amidst the struggles and tests and temptations of this life, and even if we slide back on occasion.
But the trend and the goal must be upward, as it was for Paul in Phil 3. And to the extent that man loves God with his whole heart, soul, mind, and strength and his neighbor as himself, his righteousness would be complete, that's how important love is-and how reflective love is of God's glory- in this whole plan. We're here, in a sense, to begin to fully come to learn the value of love which is the essence of all goodness and righteousness and justice, the value of
God to put it another way. Adam, as a good part of God's creation but still "raw" so to speak, missed that. He's presumably learned it by now, the hard way as we all must.