a binding spell: words tied around a person or creature to hold it under someone else's power.
This noun is built from the ordinary Hebrew verb for joining or tying things together (חבר), the verb used of curtains fastened to each other in the tabernacle. A spell, on that picture, is a knot: words fastened around a person or an animal so that it can no longer act freely. That is why older English Bibles call the person who does this a "charmer," while newer ones say he "casts a spell."
All four places the word appears fall into two shapes:
- Twice it stands right beside that verb of tying, so the Hebrew says something like "ties a tying," a phrase that names a trade: the forbidden practitioner in the law (Deuteronomy 18:11), and the skilled spell binder whose voice a deaf cobra refuses to hear (Psalm 58:5).
- Twice it is plural and owned, "your spells," naming the whole stock of magic that Babylon had built up and trusted (Isaiah 47:9, 47:12).
Both settings treat the practice as real and serious rather than quaint. The law files the spell binder among the practices Israel is not to copy, next to divination (קסם) and consulting the dead. Isaiah grants that Babylon's spells were formidable, then tells her to bring them all out and watch them fail to save her.