He that hath the Son hath life; and he that hath not the Son of God hath not life. – 1 John 5:12

Not believing in Jesus Christ is the condemnation emphatically. “This is the condemnation, that light is come into the world, and men love darkness rather than light.”…If such things were spoken concerning some people in Africa or New Zealand, you ought to be concerned about these miserable souls, though they are so far away; but they are spoken about some of you: some of you are dead. Is not this terrible? Oh, if by some touch of an angel’s wand our bodies should all become as our souls are, how many corpses would fill these aisles, and crowd these pews! John once wished for Gaius, that his body might prosper and be in health even as his soul prospered. Now, suppose our bodies were to prosper just as our souls do! Why, there would sit in one place a living woman, and side by side with her a dead husband; further on, a living child, and then a dead grey headed grandsire. Oh! what a sight this place would be! We should hasten to gather up our skirts, those of us who are alive, and say, “Let us begone! How can we sit side by side with corpses?” The effect would be startling to the last degree, and yet, most probably, the spiritual fact does not disturb us at all; we know it to be true, but we take it as a matter of course, and we go our way with scarce a prayer for our poor dead neighbors.

What I think we should do towards dead souls is this-we should pity them…Ought not this to make us pray for them: “Eternal Spirit, quicken them! They cannot have life unless they have the Son of God. O bring them to receive the Son of God”? Beloved, in connection with such prayer, be diligent to deliver the quickening message, “Believe, and live.” “Whosoever believeth that Jesus is the Christ, is born of God.” ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0755.cfm