12 “Keep on, then, with your magic spells and with your many sorceries, which you have labored at since childhood. Perhaps you will succeed, perhaps you will cause terror.

Read Isaiah 47:12 Using Other Translations

Stand now with thine enchantments, and with the multitude of thy sorceries, wherein thou hast laboured from thy youth; if so be thou shalt be able to profit, if so be thou mayest prevail.
Stand fast in your enchantments and your many sorceries, with which you have labored from your youth; perhaps you may be able to succeed; perhaps you may inspire terror.
“Now use your magical charms! Use the spells you have worked at all these years! Maybe they will do you some good. Maybe they can make someone afraid of you.