Ambrose of Milan

In this night of the world the garment of corporeal life is first to be taken off as the Lord divested himself in his flesh that for you he might triumph over the dominions and powers of this world.

Concerning Virginity 9:55 ↗

Bede

I have stripped off my tunic, etc. As if he openly says, I have abandoned the affairs of weak matters, how can I take them up again? For he who girds himself for the duty of preaching and takes on the care of governing souls, it remains that he should also be vigilant to provide the necessities of temporal aids to those to whom he preaches eternal things. …

Commentary on the Song of Songs ↗

Robert of Tombelaine

His bride stripped herself of her tunic, because she cast off all the outward things by which she was burdened. Concerning this tunic it is said: "Now let him who has a tunic sell it and buy a sword" (Luke 22:36). For he buys a sword by selling his tunic, who renounces temporal things for the sake of eternal ones, and living in holy conduct, acquires the word of preaching. Of which it is said: "And the sword of the Spirit, which is the word of God" (Ephesians 6:17). …

Commentary on the Song of Songs, Chapter 5 ↗