"Then shall they deliver you up to be afflicted and shall put you to death: and you shall be hated by all nations for My name's sake. And then shall many be scandalized and shall betray one another and shall hate one another. And many false prophets shall rise and shall seduce many. And because iniquity hath abounded, the charity of many shall grow cold. But he that shall persevere to the end, he shall be saved." (Matt. 24:9-13)
THE GRACE OF PERSEVERANCE: "He that shall persevere to the end, he shall be saved." The end -- the death of individuals, is, as far as the time of it is concerned, quite as much a secret as is the end of the world. Blessed is he whom death does not come upon unawares, in a state of sin. As a man dies, so will he appear before the judgment-seat of God at the Last Day. We ought to pray very earnestly for the grace of final perseverance; for this most important of all graces can only be obtained by prayer.
[From 'A Practical Commentary on Holy Scripture' by Bishop Knecht, D.D.]
(1899 Douay-Rheims Bible)