Here are a Couple of Sermons on Psalm 81!

Honey Out of the Rock, by Rev. Ian Kenny [Text: Psalm 81]

Honey Out of the Rock, by Thomas Wilcox (1621-1687) (Printed version)

Here are a few quotes from Thomas Wilcox's Honey Out of the Rock: 

1. "To accept Christ's righteousness alone, his blood alone for salvation, is the sum of the gospel."
2. "In all the Scripture there is not one hard word against a poor sinner stripped of self-righteousness. No! It plainly points him out to be the subject of the grace of the gospel, and none else."
3. "Because we are so hard to forgive, we think Christ is so."