And when the king came in to see the guests, he saw there a man which had not on a wedding garment…Then said the king to the servants, Bind him hand and foot, and take him away, and cast him into outer darkness; there shall be weeping and gnashing of teeth. – Matthew 22:11,13

An ungodly man may lie down in the church of God with the lambs of the flock, and nothing may lead you to suspect his true character, but when the time comes for him to make profit by sin, or to get pleasure by sin, or to escape from persecution by sin, then you find out what he is…Changes in the conditions of the church, changes in the condition of the individual, all sorts of providential events go to make up the great sieve by which the wheat and the chaff are separated. The time when the King comes in to see His guests is not the last judgment, for that is the coming of the Son and not of the Father, and if it were intended in the parable, we would read that the prince came in to see his guests. We are led to view the King Himself as continually judging professors and detecting the rebels who place themselves among the saints; by this judgment of God men are taken away from the Church in their transgressions, bound hand and foot, and cast into the outer darkness, where there is weeping and gnashing of teeth. I do not know, my dear brethren, when God may be visiting this church, and taking away the men that are rebels in our midst, but I do know that when professors die it is not certain that all of them sleep in Jesus; but some of them are rooted up, like tares from among the wheat, and are bound up in bundles to burn. The division is going on constantly. The King’s presence is known to believers in the joy which they feel, but it is made known to hypocrites by His cutting them off and appointing them their portion in eternal woe. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0976.cfm