If in this life only we have hope in Christ, we are of all men most miserable. – 1 Corinthians 15:19

“What will become of you?” said an infidel once to a Christian man, “supposing there should be no heaven?” “Well,” said he, “I like to have two strings to my bow. If there be no hereafter I am as well off as you are, and if there be I am infinitely better off. But where are you? Where are you?” Why then we must read this text in the future (tense)-“If in this life there be indeed a hope of a life to come, then you shall be in the next life of all men most miserable.” Do you see where you will be? Your soul goes before the great Judge and receives its condemnation and begins its hell. The trumpet rings; heaven and earth are astonished; the grave heaves; yonder slab of marble is lifted up, and up you rise in that very flesh and blood in which you sinned, and there you stand in the midst of a terrified multitude, all gathered to their doom. The Judge has come. The great assize has commenced. There on the great white throne sits the Savior who once said, “Come unto Me, ye weary, and I will give you rest;” but now He sits there as a Judge and opens with stern hand the terrible volume. Page after page He reads, and as He reads, He gives the signal, “Depart, ye cursed, into everlasting fire,” and the angels bind up the tares in bundles to burn them. There stand you, and you know your doom; you already begin to feel it. 

O that ye would be wise and consider your latter end! O that ye would reflect that this life is but a span, and the life to come lasts on for ever!..Look to the bleeding Savior; see there His five wounds, and His face bedewed with bloody sweat! Trust Him, trust him, and you are saved. The moment that you trust Him your sins are gone. His righteousness is yours; you are saved on the spot, and you shall be saved when He cometh in His kingdom to raise the dead from their graves. O that the Lord might lead us all thus to rest on Jesus, now and ever. Amen. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0562.cfm