Job 20:14 Kabbalah

לַ֭חְמוֹ בְּמֵעָ֣יו נֶהְפָּ֑ךְ מְרוֹרַ֖ת פְּתָנִ֣ים בְּקִרְבּֽוֹ׃

Yet his food in his bowels is turned, It is the gall of asps within him.

Read kabbalistic (mystical) interpretation of Job 20:14: and classical mystical sources.