Joseph Benson's Commentary of the Old and New Testaments - Psalms 33:12
Psalms 33:12. Blessed is the nation, &c. Seeing the Lord is so great and glorious in wisdom, and power, and goodness, as has been just observed; inasmuch as they must needs be very miserable who are either strangers or enemies to him; so thrice happy are the people of Israel, who, though they be despised by the Gentiles, are chosen by this almighty God to be his peculiar portion, friends and servants. read more
Albert Barnes' Notes on the Whole Bible - Psalms 33:12
Blessed is the nation - For the meaning of the word “blessed,” see the notes at Psalms 1:1. The idea here is, that the nation referred to is happy, or that its condition is desirable. What is true of a nation is also as true of an individual.Whose God is the Lord - Whose God is Yahweh - for so this is in the original Hebrew. That is, the nation which worships Yahweh, and is under his protection. This is evidently said to distinguish such a nation from those which worshipped false gods or idols.... read more