Idolatry is not only stupid and offensive to God; it is embarrassing. Check out this post by Ryan Higginbottom on Isaiah 20 and how embarrassing idolatry is. It’s a good example of finding the main point of a text and applying it specifically.
Those same soldiers in whom Judah had hoped were paraded naked through the streets by their captors. What a display of their weakness and frailty! What a dramatic point about the foolishness of trusting in them! You can almost hear the heavenly narrative: “Instead of me, the Lord of hosts, you trust in these guys? Really?!”
