Explanatory Notes on the Whole Bible, by John Wesley, [1754-65], at sacred-texts.com
  
Psalms 81:5
 
psa 81:5
Joseph - Among the people of Israel. Testimony - For a witness of that glorious deliverance. He - God. Went - As a captain at the head of his people. Egypt - To execute his judgments upon that land. I - My progenitors, for all the successive generations of Israel make one body, and are sometimes spoken of as one person. A language - The Egyptian language, which at first was unknown to the Israelites, Gen 42:13, and probably continued so for some considerable time, because they were much separated both in place and conversation from the Egyptians. 
Psalms 81:6
 
psa 81:6
Pots - This word denotes all those vessels wherein they carried water, straw, lime, or bricks. 
Psalms 81:7
 
psa 81:7
Calledst - At the Red Sea. Secret place - From the dark and cloudy pillar, whence I thundered against the Egyptians. 
Psalms 81:8
 
psa 81:8
Testify - This God did presently after he brought them from Meribah, even at Sinai. 
Psalms 81:10
 
psa 81:10
Wide - Either to pray for mercies, or to receive the mercies which I am ready to give you. 
Psalms 81:15
 
psa 81:15
Him - Unto Israel. Their time - Their happy time. 
Psalms 81:16
 
psa 81:16
Honey - With all pleasant and precious fruits.