So Christ was once offered to bear the sins of many; and unto them that look for Him shall He appear the second time without sin unto salvation. – Hebrews 9:28

He will appear. The appearing will be of the most open character. He will not be visible in some quiet place where two or three are met, but He will appear as the lightning is seen in the heavens. At His first appearing He was truly seen: wherever He went He could be looked at and gazed upon and touched and handled. He will appear quite as plainly, by-and-by, among the sons of men…We have seen that He once offered Himself without spot to God, and therefore, when He comes a second time, His relation to human guilt will finally cease. He will then have nothing further to do with that sin which was laid upon Him. Our sin, which He took to Himself by imputation, He has borne and discharged. Not only is the sinner free, but the sinner’s Surety is free also; for He has paid our debt to the utmost farthing. Jesus is no longer under obligation on our account. When He comes a second time, He will have no connection of any sort with the sin which once He bare. He will come, moreover, without those sicknesses and infirmities which arise out of sin…when He comes a second time it will be without the weakness, pain, poverty, and shame which accompany sin. There will then be no marred visage nor bleeding brow. He will have re-assumed His ancient glory. It will be His glorious appearing…Oh, what a glorious appearing is this! A true appearing, and yet the very opposite of the first.

To-day we fight, and He fights in us; we groan, and He groans in us, for the dread conflict is raging. When He comes again the battle will be ended: He shall divide the spoil of vanquished evil and celebrate the victory of righteousness. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2194.cfm