23. Not without thought did I make use of the beginning of this psalm, in writing to you, my children. For this psalm which the Prophet David gave to Jeduthun to sing, This psalm in the Hebrew is inscribed to Jeduthun, one of the three leading musicians in the temple services. I urge you to regard, being delighted myself with its depth of meaning and the excellency of its maxims. For we have learnt in those words we have just shortly touched upon, that both patience in keeping silence and the duty of awaiting a fit time for speaking are taught in this psalm, as well as contempt of riches in the following verses, which things are the chief groundwork of virtues. Whilst, therefore, meditating on this psalm, it has come to my mind to write “on the Duties.”