Psalms 128:5

5.Jehovah shall bless thee from Zion. Some, would have this sentence to be a prayer, and therefore they resolve the future tense into the optative mood. But it seems rather to be a continued statement of the same doctrine previously dwelt on, the Prophet now expressing more plainly that the benefits which he has recounted are to be ascribed to God as their author. Although the gifts of God often present themselves before our eyes, yet through the obscurity which false imaginations throw around them our perception of them is dim and imperfect. Hence this repetition of the sentiment, That whenever true believers meet with any prosperous events in the course of their life, it is the effect of the divine blessing, is not to be deemed superfluous. The persons described are said to be blessed from Zion, to lead them to call to remembrance the covenant into which God had entered with them, for he had graciously promised to be favorable to the observers of his law; and these principles of godliness they had imbibed from their infancy. The Prophet, therefore, declares that it is no novel doctrine or something before unheard of which he adduces, the law having long ago taught them that it is made manifest even by the temporary benefits conferred on those who serve God, that the pains taken in serving him are not thrown away; and he affirms that of this they shall actually have the experience. What is added concerning the good of Jerusalem is to be regarded as en-joining upon the godly the duty not only of seeking their own individual welfare, or of being devoted to their own peculiar interests, but rather of having it as chief desire to see the Church of God in a flourishing condition. It would be a very unreasonable thing for each member to desire what may be profitable for itself, while in the meantime the body was neglected. From our extreme proneness to err in that respect, the Prophet, with good reason, recommends solicitude about the public welfare; and he mingles together domestic blessings and the common benefits of the Church in such a way as to show us that they are things joined together, and which it is unlawful to put asuader.