The Jacob's Ladder reference article from the English Wikipedia on 24-Apr-2004
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Jacob's Ladder

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The original Jacob's Ladder was the biblical ladder to heaven on which Jacob saw angels ascending and descending.

The term has been used metaphorically or as a direct reference in titles:

It has also been used to describe many vaguely ladder-like objects: This is a disambiguation page; that is, one that points to other pages that might otherwise have the same name. If you followed a link here, you might want to go back and fix that link to point to the appropriate specific page.