“Saved by the skin of your teeth” traces back to Job 19:20, where Job describes his suffering and says he has escaped “with the skin of my teeth.” An early English version appears in Miles Coverdale’s 1535 Bible; the King James Version of 1611 later carried the wording to a wide readership. The modern expression is not an exact biblical quotation: it replaces Job’s “escaped” with “saved,” while keeping the image of survival by the narrowest possible margin.
In the Book of Job, the line comes amid a lament over illness, loss, and abandonment. Job is not describing a lucky near miss in the modern everyday sense; he is emphasizing just how little of him seems left. Over time, the vivid phrase loosened from its biblical setting and became a general idiom for narrowly avoiding harm, failure, or disaster. “Saved” reinforces the sense of rescue, but there is no need to treat it as a confirmed blend of two separate biblical sayings.
The image invites a tempting explanation: teeth have no skin, so escaping by their skin must mean escaping by almost nothing. That reading captures the phrase’s modern comic edge, but it is not a settled account of what the biblical wording originally meant. Translators and commentators have offered different interpretations of the underlying Hebrew, and the precise image remains uncertain. The evidence supports a biblical source for the English expression, not a definitive explanation of the metaphor—or a precise date for when “saved by” replaced “escaped with.”
Today, the phrase usually describes someone who gets through a close call with little room to spare. “We made the last train by the skin of our teeth after the meeting ran late.” “The team was saved by the skin of its teeth when the final shot bounced off the rim and went in.” In both cases, the speaker stresses not just success but how easily the outcome could have gone the other way.
The phrase endures because its strange, almost impossible image makes a narrow escape feel as close as it was.