‘The spirit (n’shama) of a man is a lamp of Yahweh searching all the innermost parts of the belly (beten)’, Prov. xx, 27.
Onians argues that in ancient Israelite thought the lamp is not a mere symbol of life but its actual equivalent — the oil-bearing flame identified with the human spirit (n’shama), citing Proverbs to show the lamp as Yahweh’s inner searching light.
, The origins of European thought about the body, the mind,, 1988thesis