# then they must bring out the girl

"then the elders must bring out the girl"

# stone her to death with stones

"throw stones at her until she dies"

# because she has committed a disgraceful action in Israel

"because she has done a disgraceful thing in Israel,"

# to act as a prostitute in her father's house

"acting like a prostitute while living in her father's house"

# you will remove the evil

"you must remove from among the Israelites the person who does this evil thing" or "you must execute this evil person"