Israel Finkelstein has suggested that behind multiple and large-scale Deuteronomistic and post-Deuteronomistic additions and redactions, there may lie an oral story which reflects a conflict on the boundary between Israelite and Ammonite settlements in Transjordan, around the towns of Gilead and Mizpah. It may have been first written down in the 8th century BCE, when the Northern kingdom of Israel (Samaria) began to collect its heroic tales, royal stories, and foundation myths. Finkelstein has also suggested that the story of Jephthah's vow may have been added into the story as late as the Hellenistic period.