Thought from Today’s Old Testament Passage:
[Psalm 133] At last the pilgrims are in the city. After the long and toilsome march their feet stand in the city of God. The common impulse of all has been the desire to reach the dwelling place of Jehovah, and to worship before His face. This desire has brought them together, and in this nearness of souls gathered by a common purpose there is a new blessing, and of that they sing. In finding Jehovah they have found each other, and as a result of a common loyalty to Him a new social order has been created. Under two figures the singer describes the blessedness of this order. It is like the holy anointing oil. It is like the dew of Hermon. The former suggests joy and richness of experience. The latter describes the freshness and renewal of all life. The source of the new joy is recognized, “Jehovah commanded the blessing.”
The first matter of importance in individual life is ever to seek fellowship with God. When this is sought and found, there always follows the realization of the fellowship of the saints. All lack of union among ourselves is due to failure to realize our union with God.
G. Campbell Morgan, An Exposition of the Whole Bible (Fleming H. Revell Co., 1959), pp. 271-72