John Fisher 
Commentary on the Seven Penitential Psalms [PDF ebook] 

Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. Forasmuch as this Psalm is longer than we may at this season conveniently assoil or expound, therefore we shall this day declare to you one part of it, and reserve the other unto Sunday next coming. This part that we shall expound this day is divided into three. First the prophet maketh his petition and desireth meekly to be heard of Almighty God; second he sheweth openly his own wretchedness; and lastly he remembereth himself what he may do and how much, to obtain mercy and grace. Which three members I now, as in the person of us all, shall treat and speak of; and ye shall diligently give audience and bear it in mind.