Psalms 39:3

My heart was hot within me - A natural feeling of repressed grief.

While I was musing - What was at first a simple sensation of heat produced a flame; the fire broke out that had long been smothered. It is a metaphor taken from vegetables, which, being heaped together, begin to heat and ferment, if not scattered and exposed to the air; and will soon produce a flame, and consume themselves and every thing within their reach.