Psalms 51:18

18Do good to Zion in thy good pleasure: build thou the walls of Jerusalem (273) From prayer in his own behalf he now proceeds to offer up supplications for the collective Church of God, a duty which he may have felt to be the more incumbent upon him from the circumstance of his having done what he could by his fall to ruin it, Raised to the throne, and originally anointed to be king for the very purpose of fostering the Church of God, he had by his disgraceful conduct nearly accomplished its destruction. Although chargeable with this guilt, he now prays that God would restore it in the exercise of his free mercy. He makes no mention of the righteousness of others, but rests his plea entirely upon the good pleasure of God, intimating that the Church, when at any period it has been brought low, must be indebted for its restoration solely to Divine grace. Jerusalem was already built, but David prays that God would build it still farther for he knew that it fell far short of being complete, so long as it wanted the temple, where he had promised to establish the Ark of his Covenant, and also the royal palace. We learn from the passage, that it is God’s own work to build the Church. “His foundation,” says the Psalmist elsewhere, “is in the holy mountains,” (Psalms 87:1.) We are not to imagine that David refers simply to the Church as a material structure, but must consider him as having his eye fixed upon the spiritual temple, which cannot be raised by human skill or industry. It is true, indeed, that men will not make progress even in the building of material walls, unless their labor be blessed from above; but the Church is in a peculiar sense the erection of God, who has founded it upon the earth in the exercise of his mighty power, and who will exalt it higher than the heavens. In this prayer David does not contemplate the welfare of the Church for a short period merely, but prays that God would preserve and advance it till the coming of Christ. And here, may it not justly excite our surprise, to find one who, in the preceding part of the psalm, had employed the language of distress and almost of despair, now inspired with the confidence necessary for commending the whole Church to the care of God? How comes it about, may we not ask, that one who so narrowly escaped destruction himself, should now appear as a guide to conduct others to salvation? In this we have a striking proof, that, provided we obtain reconciliation with God, we may not only expect to be inspired with confidence in praying for our own salvation, but may hope to be admitted as intercessors in behalf of others, and even to be advanced to the higher honor still, of commending into the hands of God the glory of the Redeemer’s kingdom.