I think that is interesting - the aspect of praying for perseverance being necessary.
I would add, as Paul unmistakably puts it
Romans 2: 6,7
God “will repay each one according to his deeds.” To those who by perseverance in doing good seek glory, honor, and immortality, He will give eternal life.
further
Romans 2:12
All who sin apart from the law will also perish apart from the law, and all who sin under the law will be judged by the law.
God bless you.
I would add, as Paul unmistakably puts it
Romans 2: 6,7
God “will repay each one according to his deeds.” To those who by perseverance in doing good seek glory, honor, and immortality, He will give eternal life.
further
Romans 2:12
All who sin apart from the law will also perish apart from the law, and all who sin under the law will be judged by the law.
God bless you.
St. Augustine's commentary on Our Lord's Prayer and other passages of Scripture is interesting. He says many of the Petitions in that Prayer are for perseverance, and also quotes some other Scripture passages, Old and New, on Perseverance: "This matter being settled, let us see whether this perseverance, of which it was said, He that perseveres unto the end, the same shall be saved, Matthew 10:22 is a gift of God ... For God has promised this, saying, I will put my fear in their hearts, that they may not depart from me. Jeremiah 32:40 And what else is this than, Such and so great shall be my fear that I will put into their hearts that they will perseveringly cleave to me? ... when the saints say, Lead us not into temptation, but deliver us from evil, Matthew 6:13 what do they pray for but that they may persevere in holiness? For, assuredly, when that gift of God is granted to them — which is sufficiently plainly shown to be God's gift, since it is asked of Him — that gift of God, then, being granted to them that they may not be led into temptation, none of the saints fails to keep his perseverance in holiness even to the end. For there is not any one who ceases to persevere in the Christian purpose unless he is first of all led into temptation. If, therefore, it be granted to him according to his prayer that he may not be led, certainly by the gift of God he persists in that sanctification which by the gift of God he has received."
Taken from: https://www.newadvent.org/fathers/15122.htm
One of the points "P" in the Calvinist understanding of TULIP is called "Perseverance of the Saints" but it means something different. It means, apparently, that everyone justified will never fall away but will persevere, which seems contrary to some Biblical examples. Anyway, I would say it isn't a Salvation issue as such, as I'm sure there are Saved Christians on both sides, but Praying for Perseverance is safer and surer. Many who said they would never fall away in fact did. Why? Some say it is always because "they were never justified to begin with". More likely, "they never Prayed for Perseverance" etc. For if they had prayed, and if Our Lord says the Father will grant what we persist in asking and seeking for, they would have received that Grace of Perseverance in the Faith, and thus would not have fallen away from Christ, and been saved.
God Bless.