Enduring to the end is proof of genuine conversion.
And linked to being saved:
Matthew 10:22--King James Version
22 And ye shall be hated of all men for my name's sake:
but he that endureth to the end shall be saved.
Certain people do not see this as a reference to eternal salvation from sin, but rather the deliverance of survivors at the end of the tribulation where the Deliver will save the nation Israel from its persecutors. Many will not endure to the end in that they will be martyred for their faith.
If they are martyred because of their faith--then they endured to the end, IMO.
I don't find that any different than other testimonies:
Hebrews 12:15--King James Version
15 Looking diligently lest any man fail of the grace of God; lest any root of bitterness springing up trouble you, and thereby many be defiled;
These are common verses cited by those who teach salvation by faith AND WORKS. The good deeds of the redeemed (those who have done good) are not the basis or means by which they obtained salvation, but the evidence of it. A person's conduct, whether good or evil, reveals the condition of their heart.
Claiming the works are the condition of their heart does not eclipse the fact they were judged according to their works(condition of their heart)--call it whatever one may:
John 5:28-29---King James Version
28 Marvel not at this: for the hour is coming, in the which all that are in the graves shall hear his voice,
29 And shall come forth;
they that have done good, unto the resurrection of life; and they that have done evil, unto the resurrection of damnation.
How is that any different than other testimonies?
John 5:28-29----King James Version (KJV)
28 Marvel not at this: for the hour is coming, in the which
all that are in the graves shall hear his voice,
29
And shall come forth; they that have done good, unto the resurrection of life; and they that have done evil, unto the resurrection of damnation.
2 Corinthians 5:10---King James Version (KJV)
10 For
we must all appear before the judgment seat of Christ; that every one
may receive the things done in his body, according to that he hath done, whether it be good or bad.
1 Peter 1:16-17---King James Version (KJV)
16 Because it is written, Be ye holy; for I am holy.
17 And if ye call on the Father,
who without respect of persons judgeth according to every man's work, pass the time of your sojourning here in fear:
Romans 2:5-11----King James Version (KJV)
5 But after thy hardness and impenitent heart treasurest up unto thyself wrath against the day of wrath and revelation of the righteous judgment of God;
6
Who will render to every man according to his deeds:
7 To them who by patient continuance in well doing seek for glory and honour and immortality, eternal life:
8 But unto them that are contentious, and do not obey the truth, but obey unrighteousness, indignation and wrath,
9 Tribulation and anguish, upon every soul of man that doeth evil, of the Jew first, and also of the Gentile;
10 But glory, honour, and peace, to every man that worketh good, to the Jew first, and also to the Gentile:
11
For there is no respect of persons with God.
Matthew 16:27---King James Version
27 For the Son of man shall come in the glory of his Father with his angels; and
then he shall reward every man according to his works.