John Gills Exposition of the Bible Commentary - Psalms 81:1
Sing aloud unto God our strength ,.... The strength of Israel, who, by strength of hand, and a mighty arm, brought Israel out of Egypt, protected and upheld them in the wilderness, and brought them to, and settled and established them in the land of Canaan; and who is the strength of every true Israelite, from whom they have both their natural and spiritual strength; so that they can exercise grace, perform duty, bear afflictions, withstand temptations, fight with and conquer enemies, and... read more
Matthew Henry's Complete Commentary - Psalms 81:1-7
When the people of God were gathered together in the solemn day, the day of the feast of the Lord, they must be told that they had business to do, for we do not go to church to sleep nor to be idle; no, there is that which the duty of every day requires, work of the day, which is to be done in its day. And here, I. The worshippers of God are excited to their work, and are taught, by singing this psalm, to stir up both themselves and one another to it, Ps. 81:1-3. Our errand is, to give unto... read more