In examining Scripture, I think we see two things that hold this doctrine in tension. First, all those who are truly born again will persevere to the end. Second, only those who persevere to the end are truly born again. All in all, the underlying factor that makes both of these possible is the grace of God.
!. Only those who are truly born again will persevere to the end.
There are many scriptures that indicate that only those who are truly born again will continue in the Christian life.
The Gospels:
John 6:38-40, "I have come down from heaven, not to do My own will, but the will of Him who sent Me; and this is the will of Him who sent Me, that I should lose nothing of all that He has given Me, but raise it up at the last day. For this is the will of My Father, that everyone who sees the Son and believes in Him should have eternal life; and I will raise him up at the last day."