Harmony is a state that many try to achieve, but few can maintain. A man without God will find himself continually disagreeing, fighting, and pushing for position. The psalmist, however, beautifully expressed the wonder of people working and walking together in one accord.
Harmony is not uniformity, as we all possess different outlooks, backgrounds, and gifts. Harmony is a choice to sacrifice one's personal agenda for the greater good of the "team," whether that team is a family, ministry, or organization. Harmony generates the same precious fragrance as the oil that ran from Aaron's head onto his robe. It is as refreshing as the crystal waters that flowed from snowcapped Mount Hermon to the valley below (Psalm 133:3).
Whenever the leaders come into harmony, or unity, the followers who are under them will unify as well. Let us accept the great challenge of Christ's prayer in John 17 and lay aside our personal king-dom-building in order that we may promote and help the whole Body. One day we will join the hundreds of millions around the throne, as we all sing in harmony, "The Lamb is worthy" (Revelation 5:12).