God has appointed a day when He will judge the whole world in righteousness, and because God deserves the reward of His suffering.They are not innocent and many of them have rejected the only way of salvation that they ever had available to them. Because they have sinned against conscience and against God, all their lives and all their righteous deeds are as filthy rags in the sight of the Holy God who is Creator and Judge.
Arthur W. Pink said,
Because he is holy and just, God must judge sin wherever it is found. If then God spared not the Lord Jesus when sin was found upon him, what possible hope is there, unsaved reader, that he will spare thee when thou standest before him at the great white throne with sin upon thee?*
If God poured out his wrath on Christ while he hung as surety for his people, be assured that he will most certainly pour out his wrath on you if you die in your sins. The word of truth is explicit:
He that believeth not the Son shall not see life; but the wrath of God abideth on him –John 3:36.
God “spared not” his own Son when he took the sinner’s place, nor will he spare him who rejects the Saviour. Christ was separated from God for three hours, and if you finally reject him as your Saviour you will be separated from God for ever.
Who shall be punished with everlasting destruction from the presence of the Lord –2 Thess. 1:9.
*Pink, A. W. The seven sayings of the Saviour on the cross.