What opinions do ppl hold to Jesus' words " endure to the end" ?
Every Scripture must be considered in its proper "Context" or we will come away with our own opinions instead of what God wanted us to know.
This specific phrase you posted is best understood when read in context.
Matthew 24:9-14 says .......
“Then you will be handed over to be persecuted and put to death, and you will be hated by all nations because of me. At that time many will turn away from the faith and will betray and hate each other, and many false prophets will appear and deceive many people. Because of the increase of wickedness, the love of most will grow cold, but the one who stands firm to the end will be saved. And this gospel of the kingdom will be preached in the whole world as a testimony to all nations, and then the end will come.”
Also, the book of Matthew was written to the Jews and the Mt. Olivet discourse was done to answer the question asked of Jesus in Matthew 24:3...........
"And as he sat upon the mount of Olives, the disciples came unto him privately, saying, "
From God’s viewpoint outside our timeframe, the “end times” began with the outpouring of the Holy Spirit.
In Acts 2:16-21(Please read it) Peter describes this event as “the last days.”
From that perspective, it makes sense that Jesus combined events in AD 70 with those yet to come. They are all “the last days.” He then warns that, as persecution increases, many who considered themselves His followers will reveal their true spiritual condition when they turn away from the faith.
We are already seeing this take place with the explosion in recent years of "sinless perfection through hyper grace" teaching and the "prosperity and name it and claim" false teachers. Millions are being deceived, with Bibles in their laps, because the words of the false prophets are ego-soothing, exciting, and more desirable than Scripture’s focus upon self-sacrifice and surrender.
This had already happened during His ministry (John 6:66) and would escalate until the end. True Christian faith would be tested by deception, because false prophets, and the increase of wickedness. Not only will there be some who turn away, but Jesus foretold that “the love of most will grow cold.”
The teaching then is that those who “stand firm to the end” will be the minority (Matt. 7:14).