I don’t know why this works or exactly where it came from, but my grandma used to recite this when someone was bleeding. Every time I can remember the bleeding stopped almost immediately. She would say the person’s full name and them recite this verse. She did it three times in a row.

And when I passed by thee, and saw thee polluted in thine own blood, I said unto thee when thou wast in thy blood, Live; yea, I said unto thee when thou wast in thy blood, Live.

Edit: Just searched and this verse is Ezekiel 16:6