The word "behold" alerts us to the new person in the story. Your language may have a way of doing this. English uses "There was a man in the crowd who" (See: [[rc://en/ta/man/translate/writing-participants]])
The phrase "You see" introduces us to the evil spirit in the man's story. Your language may have a way of doing this. AT: "There is an evil spirit that" (See: [[rc://en/ta/man/translate/writing-participants]])
"foam comes out of his mouth." When a person has a seizure, they can have trouble breathing or swallowing. This causes white foam to form around their mouths.