How does God’s work of judgment during the last days purify and save mankind?

How does God’s work of judgment during the last days purify and save mankind?

Classic Words of God: 

“In the last days, Christ uses a variety of truths to teach man, expose the essence of man, and dissect his words and deeds. These words comprise various truths, such as man’s duty, how man should obey God, how man should be loyal to God, how man ought to live out the normal humanity, as well as the wisdom and the disposition of God, and so on. 

Someone says: On the cross, the Lord Jesus spoke the words, “It is finished.” Doesn’t that prove that God’s work of salvation has already been completed? Why would God return in the last days to do another stage of the work of judgment starting in His own house?

Someone says: On the cross, the Lord Jesus spoke the words, “It is finished.” Doesn’t that prove that God’s work of salvation has already been completed? Why would God return in the last days to do another stage of the work of judgment starting in His own house?

Someone says: On the cross, the Lord Jesus spoke the words, “It is finished.” Doesn’t that prove that God’s work of salvation has already been completed? Why would God return in the last days to do another stage of the work of judgment starting in His own house?

Bible Verses for Reference:

“And I saw another angel fly in the middle of heaven, having the everlasting gospel to preach to them that dwell on the earth, and to every nation, and kindred, and tongue, and people, Saying with a loud voice, Fear God, and give glory to him; for the hour of his judgment is come: and worship him that made heaven, and earth, and the sea, and the fountains of waters” (Rev 14:6-7).