Bede

Come, my beloved, let us go forth into the field, etc. For even the holy ones of old greatly desired the Lord to come for the salvation of the human race. Thus, praying, they say, "Stir up your might and come to save us" (Psalm 79). They desired him to go forth into the field, that is, for him who was invisible with the Father to appear visible to the world, according to Habakkuk, who prophesied future events as if they were already happening, "You went out for the salvation of your people, for the salvation of your anointed" …

Commentary on the Song of Songs ↗

Robert of Tombelaine

While the bride, having experienced the sweetness of the Bridegroom, refreshes herself, she also thinks of her neighbor, whom she loves as herself by the Bridegroom's own command; and because she understands the Bridegroom's precepts, she desires that others may understand them as well. For the field, as Truth itself attests, is this world (Matt. 13). The Bridegroom goes forth into the field with the bride when the Word of God, having taken on flesh, is shown to the world in the bridal chamber of the Virgin. …

Commentary on the Song of Songs, Chapter 7 ↗