Given a passage and a question, find the answer to the question based on the passage. The answer should consist of only one word that lies in the span of only one of the sentences in the passage.

Paragraph: Skin of my teeth ( Hebrew : ' o - wr sin - nay ) is a phrase from the Bible . In Job 19 : 20 , the King James Version of the Bible says , '' My bone cleaveth to my skin and to my flesh , and I am escaped with the skin of my teeth . '' In the Geneva Bible , the phrase is rendered as '' I have escaped with the skinne of my tethe . ''
Question: where did by the skin of my teeth come from
Bible