And in Revelation we see God breaking the seal of ownership of the person when he
takes away their part in the holy city and the tree of life for adding to or subtracting from the words of the Revelation prophecy:
"18I testify to everyone who hears the words of the prophecy of this book: if anyone adds to them, God will add to him the plagues which are written in this book; 19and if anyone takes away from the words of the book of this prophecy, God will take away his part from the tree of life and from the holy city, which are written in this book." (Revelation 22:18-19 NASB bold and underline mine)
...through faith.
But it is being argued here that we still have the power of God keeping us for the Day of salvation even if we don't have the 'through faith' part.
"5who are protected by the power of God through faith for a salvation ready to be revealed in the last time." (1 Peter 1:5 NASB)
That's not what Jesus said.
Matthew 25:31-46 NASB is a glimpse into the Day of Judgment. On that day, at the Judgment, Christ will use our works to determine if we go to the eternal kingdom of God, or to the eternal damnation of the lost, not to determine rewards above and beyond salvation:
34“Then the King will say to those on His right, ‘Come, you who are blessed of My Father, inherit the kingdom prepared for you from the foundation of the world. 35‘For I was hungry, and you gave Me something to eat; I was thirsty, and you gave Me something to drink; I was a stranger, and you invited Me in; 36naked, and you clothed Me; I was sick, and you visited Me; I was in prison, and you came to Me.’
41“Then He will also say to those on His left, ‘Depart from Me, accursed ones, into the eternal fire which has been prepared for the devil and his angels; 42for I was hungry, and you gave Me nothing to eat; I was thirsty, and you gave Me nothing to drink; 43I was a stranger, and you did not invite Me in; naked, and you did not clothe Me; sick, and in prison, and you did not visit Me.’
(Matthew 25:34-36,41-43 NASB)
Does this mean Jesus is saying justification/ salvation is secured through doing works of righteousness? No, of course not. What it shows us is our works are the evidence by which we prove ourselves to be saved children of God (Philippians 2:15-16 NASB). But it is being argued in this thread that we can stop believing and produce no righteous work as a result of that unbelief and we will still be saved at the Judgment, completely contradicting the Bible that shows us righteous behavior is the necessary evidence that must accompany salvation to validate that person as being born again (i.e. 1 John 3:6-10 NASB).