Psalms 67:4

Glad and sing for joy - They shall be made happy in thy salvation. Even their political state shall be greatly meliorated; for God will be acknowledged the supreme Judge; their laws shall be founded on his word; and the nations of the earth shall be governed according to judgment, justice, and equity.

Selah - This is true. There are innumerable facts to confirm it. All the nations who have received the Gospel of Christ have been benefited politically, as well as spiritually, by it.

O let the nations be qlad, and sing for joy - All the nations of the earth. Let them all be made acquainted with thee; with thy character; with the principles of thy govermnent; with the methods by which thou dost bestow thy favors, that they all may be made glad. These things pertain to them all. The knowledge of these things would convey inestimable blessings to them all, and fill all their hearts with joy. Nothing would, in fact, diffuse so much happiness over a miserable and guilty world - nothing would furnish such an occasion for universal joy, gratitude, and praise - as the possession of the knowledge of the great principles on which God rules the world, and on which he blesses people.

For thou shalt judge the people righteously - That is, The great principles of thy administration are right, or righteous. and the nations will have occasion to rejoice in them.

And, govern the nations upon earth - Margin, lead. So the Hebrew. That is, God would instruct them what to do; he would guide them in paths of prosperity, happiness, salvation. Individuals and nations, as they follow the counsels of God, are safe and happy; and in no other way.

67:4 Judge - Rule them. Govern - Heb. lead; gently, as a shepherd doth his sheep; and not rule them with rigour, as other lords had done.