v1: The changing desire of the Daughters of Jerusalem. They now want to seek him. In this way, our testimony can be effective, helping others to meet the Saviour.
v2-3: His garden (4.12); we are His garden, for fruitfulness, for delight, for praise to Him. It is wonderful to know Him, but even better to know I belong to Him. Belonging means to be involved in His service. The change in wording from 2.16 indicates a growing maturity.
v4-7: Compare 4.1-3; the Beloved's description is partially repeated; her beauty remains.
Tirzah was the home of a number of kings of Israel; Baasha (1 Kings 15.33), Elah (1 Kings 16.8), Zimri (1 Kings 16.15), Omri (1 Kings 16.23); there are no references pre-dating the Song. Perhaps, like Jerusalem, it was a beautiful city, set in a fertile valley; and this was the reason the kings chose it.
v8-9: The uniqueness of the Shulamite. The Beloved was overcome by her eyes; the Lord Jesus has made His church beautiful, "my dove, my perfect one." Any argument for religious pluralism is the equivalence of 'spiritual adultery.' Christ cannot be 'married' to more than one body, or Church.
v10: The Daughters of Jerusalem, the bride's friends, begin to appreciate the glories of the Beloved. They join in the paean of praise.
v11-12: Going to the place of service. After the separation of chapter 5, there have been mutual declarations of beauty (5.10-16 and v4-7); now the love is renewed.
v13: The Beloved's desire is to look upon his bride. She is now seen as glorious, and the Daughters of Jerusalem also delight in her.
We see that the Lord Jesus makes His bride lovely, acceptable to the Father; see Eph 3.10-11, where the wisdom of God is displayed through His church.