Psalm 133, a brief yet profound poem of only three verses, encapsulates a goal, a hope, and a prayer for unity among brethren. It serves as a fitting rallying cry for the church of God, especially in times of splintering and division, urging a collective aspiration for togetherness. The psalm, attributed to David and part of the Songs of Ascent, likely sung during pilgrimages to Jerusalem for the great feasts, holds a significant place as the fourteenth of fifteen psalms, suggesting unity as one of the final challenges before reaching the ultimate goal, akin to entering the Kingdom of God. The text of Psalm 133 reads: "Behold, how good and how pleasant it is for brethren to dwell together in unity! It is like the precious oil upon the head, running down on the beard, the beard of Aaron, running down on the edge of his garments. It is like the dew of Hermon, descending upon the mountains of Zion; for there the Lord commanded the blessing—life forevermore." This vivid imagery portrays unity as both proper and attractive, a state that pleases God and brings pleasure to His people. In the first verse, the concept of unity, though not explicitly stated in the Hebrew as a single word, is conveyed through the idea of brothers dwelling together, implying a union or oneness that is right and lovely. The second verse compares unity to the precious oil used in Aaron's anointing as high priest, descending from head to toe, symbolizing complete coverage and consecration, extending from the head to the entire body. This metaphor highlights unity as a holy and transcendent state among brethren. The third verse likens unity to the dew of Hermon descending to the mountains of Zion, an exaggerated image of abundant refreshment covering the land from north to south, suggesting a corporate blessing that encompasses all of God's people, with Zion representing the church. The psalm concludes with the powerful statement that God commands the blessing of eternal life within Zion, indicating that unity is a vital response to His command, integral to the quality of eternal life. Unity, facilitated by God's Spirit descending from a higher place, requires effort, humility, and sacrifice from each individual to be realized, promising profound blessings when achieved under His terms.

Psalm 133 stands as a powerful expression of the beauty and importance of unity among brethren. How good and how pleasant it is for brethren to dwell together in unity, as the first verse declares, setting a tone of hope and aspiration for harmony among God's people. This unity is not merely a suggestion but a profound goal, reflecting what is proper, fitting, and attractive in God's sight. It brings great pleasure and benefits to those who are joined together, emphasizing the rightness and loveliness of such togetherness. The psalm, one of the fifteen Songs of Ascents, holds a significant place near the end of this series, suggesting that unity is a final hurdle before the ultimate fulfillment of God's plan. Verses 2 and 3 vividly illustrate this unity through the metaphors of oil and dew. The oil, running down upon Aaron's head, beard, and garments, symbolizes a proper and pleasant anointing, evoking a sweet aroma reserved for the high priest's consecration. This imagery portrays unity as something holy and set apart, descending from a higher place to cover the entire body. Similarly, the dew descending from Hermon to the mountains of Zion represents a refreshing and gentle covering, illustrating unity as a gift that spans from the highest to the lowest, encompassing all within the church. Furthermore, Psalm 133 concludes with the declaration that God commands His blessing of eternal life in Zion, underscoring that unity is vital to this divine promise. Unity is presented as a command from God, requiring a response from His people to work toward it, to promote and sustain it. Without this effort, unity cannot be achieved, even with the abundant outpouring of God's Spirit. Thus, the psalm calls for a collective striving toward harmony, reflecting the deep yearning for brethren to dwell together as one, in alignment with God's will.

Psalm 133 stands as the fourteenth of the fifteen Psalms of Ascents. Positioned within the second set of seven psalms in the overall 7:1:7 arrangement, it forms part of the second group of three psalms that follows the established pattern of distress, trust in God, and praise. Its superscription identifies it as one of the four psalms in the collection attributed to David. The text presents the psalm as suited to the fourteenth day of the seventh month, the day before the Feast of Tabernacles, when worshipers gather in unity before entering the feast. Its opening declaration that it is good and pleasant for brethren to dwell together in unity aligns directly with that preparatory gathering. Within the pilgrimage framework that structures the entire set, Psalm 133 supplies the element of trust in God after the preceding psalm of affliction and before the final psalm of praise that celebrates arrival in the divine presence. This placement reinforces the broader progression through the Psalms of Ascents, in which successive groups move the worshiper from trial through reliance upon God to the blessing and peace found at the journey's end in the house of the Lord.