Blessed is the man to whom the Lord will not impute sin. – Romans 4:8

You understand that so long as Jesus was here He lay under the charge of our sins. Whilst He was in the world, His Father had made to meet upon Him the iniquity of us all. But when He died, His death discharged all the liabilities of His elect. The handwriting of ordinances that was against us was then taken away. When He went to Calvary as our Surety, the sins of all His people were His debts: He had taken them upon Himself. But when He rose from the dead in the garden He had no debts of ours: He had no longer any substitutional engagement or liability. All the debts which He had taken upon Himself as our Redeemer He had fully and completely discharged. No officer can arrest a man for debt who has none, and Christ now lives, therefore, as a justified person. And,. brethren, no officer of justice can arrest any of the people for whom Christ paid their debts. How, then, shall death have any dominion over those whose debts are all discharged? How shall they be laid in prison for whom Christ was laid in prison? How shall they suffer death, which is the penalty of sin, for whom Christ has already suffered all the penalties which justice could have demanded? Because He lives the life of one who has discharged the debts of His people, they must, in justice, live.

Jesus Christ represents all the people who are in Him, and as long as He lives, they live. He is their Covenant Head. As long as Adam stands, his race shall stand; when Adam falls, the human race falls. While, therefore, Christ lives, the Christly ones, who are in Him, live through His representation. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/3401.cfm

Because I live, ye shall live also – John 14:19

So when this corruptible shall have put on incorruption, and this mortal shall have put on immortality, then shall be brought to pass the saying that is written, Death is swallowed up in victory. – 1 Corinthians 15:54

You are travelling along the iron road of the railway, and there comes a sudden jerk, and you stop. What is it? It is the thought of death…It is an item in the great world of life that to you who are in Him is scarcely worth consideration, because the text over-rides that, and swallows it up, as it is written “death is swallowed up in victory”: it is made as though it did not exist. “Because I live, ye shall live also.” Your continued life of happiness, of holiness, of spirituality, of consecration, and of obedience-which, indeed is your only life worth having-is guaranteed to you in the text. Death cannot interfere with it, not even by the space of a single second-nay,. I tell you not even by the space of the ticking of a clock. What, a Christian die? “Because I live, ye shall live also,” is never suspended. There is not time for it to be suspended in. Do you know what death really is? Does it take long to die? I have heard of men who have been said to be weeks in dying. Not so; they were weeks living; the dying occupied no space; that was done at once, and immediately. And so with the believer. To him death is so slight a jerk that he still keeps on upon the same line. He still lives, only there is this difference, that it is as though the railway had hitherto been running through a tunnel, and he now comes out of it into the open plain. His life below was the train in the tunnel, but when he dies, as we call it, there is a jerk, and then it comes right out of the tunnel into the fair, open, champaign country of heaven, where all is clear and bright, where all the birds are singing, and the darkness is over, and the mist and fogs are gone, and his soul is for ever blessed… ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/3401.cfm