Furthermore, when your heart is overcome and mired in doubt … Even hymns that are long-rehearsed don’t spring to mind, let alone those that are not rehearsed. Suppose there was a bowl of water that was cloudy, murky, and muddy, hidden in the darkness. Even a person with clear eyes checking their own reflection wouldn’t truly know it or see it. In the same way, there’s a time when your heart is overcome and mired in doubt and you don’t truly understand the escape from doubt that has arisen. At that time you don’t truly know or see what is good for yourself, good for another, or good for both. Even hymns that are long-rehearsed don’t spring to mind, let alone those that are not rehearsed.