…behold, now is the accepted time; behold, now is the day of salvation. – 2 Corinthians 6:2

A man on board a vessel, when he hears the cry of “Fire!” must not stop to arrange his clothes; he must not be concerned to see that his face is washed, that he has bound together that little bundle of papers, or packed up the portmanteau, or counted over the little purse of gold, or even snatched his little property from the cabin. At once, at once, must he climb the stairs and reach the deck, or he will never have stairs to climb, nor feet to climb with. Now or never. Quick is the word. Waste a moment, and it is all over with you; the fire is upon you, for it tarries not in its march… Now is the accepted time; behold, now is the day of salvation.” Now, now, NOW. This is the only period God has allotted to you, take care that you use it, lest when your to-days are past, and you hope to see your to-morrow, you should have to spend your to-morrows in the pit of hell. Procrastination is not only the thief of time, but the thief of souls. Now is the day of salvation; I have never heard of any other day.

I know, young man, you intend to think of these things when you are ill; you expect to have a long time upon a sick-bed, and then you suppose all will be right before you die. I tell you, sir, it is hard repenting upon a dying bed.

Consider your ways, O sinners, born to die. Believe in the Lord Jesus Christ, O trembler, and thou shalt be saved. Trust Him, trust Him. God help thee to trust Jesus, for it is now or never with thy soul. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/0550.cfm