I'm not familiar with Tobit. It teaches the casting of spells?
No, it does not.
It is in the orthodox Bibles, and in the Septuagint.
The Watcher angel, Raphael, one of the seven who stand before the throne, appears as a man ( as watcher angels can do: Enoch, Joshua, Genesis 18, Genesis 32, and as Paul said they can do), and helped Tobias return safely to his father's native land to reclaim his father's fortune left with a friend and to get a wife for his son.
There was a fish that tried to eat Tobias and they killed it, saved gall from the liver and ate part....without looking, I don't remember all, but Raphael had some of the saved oil burned as incense which drove off a demon that had killed six husbands of the virgin, before the marriage was consummated, and Raphael chased it to another land, bound it, and returned to help Tobias get the bride, get the fortune, and return safely, and put gall from the liver in his father's blinded eyes, which melted off cataracts and gave him his eyesight.
It was Raphael who is set over the illnesses of the Adam race, and so Raphael stirred the waters of the pool so that whoever set foot in first, was healed, when Jesus healed the paralyzed man.
This is not casting spells, nor is it witchcraft.
David chased away the evil spirit that possessed Saul by playing his music.
In the Dead Sea Scrolls, there is a psalm/song against evil spirits that David wrote. David wrote many more psalms/songs than are included in the Tenach...
A king was cured of leprosy by bathing in the Jordan...a king was healed of disease by a fig poultice ordered by the prophet, and so on....
That said, Deacon Dean has high jacked the thread....and I ask that he delete those threads that do so.