Verse 1. - Sing aloud unto God our Strength. "Loud" singing is regarded as indicative of earnestness and sincerity (see 2 Chronicles 20:19; Nehemiah 12:42; Psalm 33:3; Psalm 98:4, etc.). (On God as Israel's "Strength," see Psalm 27:1; Psalm 28:8; Psalm 46:1; Psalm 111:7.) Make a joyful noise unto the God of Jacob. The word translated "make a joyful noise" is especially used of the blare of trumpets (Leviticus 23:24; Numbers 29:1).

81:1-7 All the worship we can render to the Lord is beneath his excellences, and our obligations to him, especially in our redemption from sin and wrath. What God had done on Israel's behalf, was kept in remembrance by public solemnities. To make a deliverance appear more gracious, more glorious, it is good to observe all that makes the trouble we are delivered from appear more grievous. We ought never to forget the base and ruinous drudgery to which Satan, our oppressor, brought us. But when, in distress of conscience, we are led to cry for deliverance, the Lord answers our prayers, and sets us at liberty. Convictions of sin, and trials by affliction, prove his regard to his people. If the Jews, on their solemn feast-days, were thus to call to mind their redemption out of Egypt, much more ought we, on the Christian sabbath, to call to mind a more glorious redemption, wrought out for us by our Lord Jesus Christ, from worse bondage.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 hold on and out unto the end; and therefore have reason to sing the praises of God with great fervour, zeal, and affection:

make a joyful noise unto the God of Jacob; or Israel, being the God that had made a covenant with them, had chosen them for his peculiar people, and had redeemed them out of the house of bondage, and bestowed peculiar favours upon them; and therefore were under obligation to show forth his praise vocally and audibly, and with strong expressions of joy; and the spiritual Israel of God much more so, who have an interest in the covenant of grace, and share in electing, redeeming, and calling grace, by all which he appears to be their God and Father, in a special sense.