Psalms 72:3

This is a prophecy of the kingdom of Christ; many passages in it cannot be applied to the reign of Solomon. There were righteousness and peace at first in the administration of his government; but, before the end of his reign, there were troubles and unrighteousness. The kingdom here spoken of is to last as long as the sun, but Solomon's was soon at an end. Even the Jewish expositors understood it of the kingdom of the Messiah. Observe many great and precious promises here made, which were to have full accomplishment only in the kingdom of Christ. As far as his kingdom is set up, discord and contentions cease, in families, churches, and nations. The law of Christ, written in the heart, disposes men to be honest and just, and to render to all their due; it likewise disposes men to live in love, and so produces abundance of peace. Holiness and love shall be lasting in Christ's kingdom. Through all the changes of the world, and all the changes of life, Christ's kingdom will support itself. And he shall, by the graces and comforts of his Spirit, come down like rain upon the mown grass; not on that cut down, but that which is left growing, that it may spring again. His gospel has been, or shall be, preached to all nations. Though he needs not the services of any, yet he must be served with the best. Those that have the wealth of this world, must serve Christ with it, do good with it. Prayer shall be made through him, or for his sake; whatever we ask of the Father, should be in his name. Praises shall be offered to him: we are under the highest obligations to him. Christ only shall be feared throughout all generations. To the end of time, and to eternity, his name shall be praised. All nations shall call HIM blessed.

The mountains shall bring peace to the people. Thence, aforetime, rushed the robber bands which infested the country; but now the forts there erected are the guardians of the land, and the watchmen publish far and near the tidings that no foe is to be seen. Where Jesus is there is peace, lasting, deep, eternal. Even those things which were once our dread, lose all terror when Jesus is owned as monarch of the heart: death itself, that dark mountain, loses all its gloom. Trials and afflictions, when the Lord is with us, bring us an increase rather than a diminution of peace. And the little hills, by righteousness. Seeing that the rule of the monarch was just, every little hill seemed clothed with peace. Injustice has made Palestine a desert; if the Turk and Bedouin were gone, the land would smile again; for even in the most literal sense, justice is the fertilizer of lands, and men are diligent to plough and raise harvests when they have the prospect of eating the fruit of their labours. In a spiritual sense, peace is given to the heart by the righteousness of Christ; and all the powers and passions of the soul are filled with a holy calm, when the way of salvation, by a divine righteousness, is revealed. Then do we go forth with joy, and are led forth with peace; the mountains and the hills break forth before us into singing.