The lyrics to Care for thy Soul come from William Byrd’s Psalms, Sonnets, and Songs of 1588. Evidently, it became a popular text, because it was taken up by a number of later composers of various styles, among them Francis Pilkington, an early English Baroque lutenist, and composer.
Like most pieces of the period, there is much imitative counterpoint, many sequences, etc.
The sheet music is published by the TBQ Press - http://www.tbqpress.com/ Scroll down their listings to find the piece.
It is also available as an unpublished brass sextet (link) available from me.
The mp3 performance is from my CD “Savannah River Brassworks,” available on my recordings page.