Psalms 72:1

1. Judgments… righteousness The latter the principle, the former the act or sentence, of justice. The one implies the discernment of the will of God, or wisdom to govern; the other, the executive energy to adjust the administration of government to that standard. This was partially fulfilled in the early part of Solomon’s reign, (see 1 Kings 3:28; 1 Kings 10:9,) but the state of society here described is realized fully only under King Messiah’s government, and is represented (Revelation 20:4) as belonging to the millennium: “I saw thrones, and they sat upon them, and judgment was given unto them.”

The king… the king’s son The one a designation of office, the other of royal descent, and hence of hereditary right to reign.