“Wherefore thus says the Lord Yahweh, ‘Behold I am against your armbands (wristbands) with which you hunt the people (nephesh - living person) as birds (or ‘as becoming flying ones'), and I will tear them from your arms, and I will let the people go, even the people that you hunt as birds. Your shrouds will I also tear, and deliver my people out of your hand, and they will no more be in your hand to be hunted, and you will know that I am Yahweh.”
It is clear from this that the armbands and shrouds were seen as binding people by spells, not because of their own power but because of the power given by the superstitions of the people who believed their lies. The hunting as birds again suggests astral travel, or something similar. Thus when God's judgment came their armbands and shrouds would be torn from them. They would no longer be able to harm others. God's people would no longer be in their hands or subject to their suggestive powers. Thus would all see that Yahweh was triumphant over them. The fact of Yahweh's all-powerful nature would be revealed.