Why There Is Only One Deathbed Conversion in the Bible

It cannot be too often, or too loudly, or too solemnly repeated, that the Bible, which ranges over a period of four thousand years, records but one instance of a death-bed conversion—one that none may despair, and but one that none may presume.—Thomas Guthrie (1803-1873), a Scottish preacher, in chapter 1 of Early Piety
From Justin Taylor's Between Two Worlds.