A song of ascents. Of David. Behold, how good and pleasant it is when brothers live together in harmony!
Behold it because it is rarely seen and well worth your study. Unity among brothers is both good and pleasant at once, which is remarkable: most pleasant things carry evil with them, but here the pleasure and the goodness are inseparable and equally excellent.
AI summary
The word brethren here means not merely those of the same blood, but all who share the same faith, profess the same religion, and live under the same godly institutions. When such people dwell together in unity, it is a condition worthy of our closest attention and praise.
AI summary
Commenting on Psalm 133:1-3
Behold, how good and how pleasant [it is] for brethren to dwell together in unity! (a) Because the greatest part was against David, though some favoured him, yet when he was established king at length, they joined all together like brothers: and therefore he shows by these similarities the convenience of brotherly love.