Can you put the knife on the bed?

No, it's not good. If you put it by the bed, you may be stabbed with a knife, or your hand may be cut. Moreover, in case the empty door is broken into at night, the other party is looking for money, and seeing such a weapon may kill you. It's best to put it under the pillow, so that you can shoot it easily, and no one knows it, and it won't hurt yourself.

I really want to hang mahogany to ward off evil spirits, and it is a sword.