Simeon's vengeance, and punishment in the blessing, are viewed by biblical scholars as aetiological postdictions which were designed to explain why, in the time of the author of the blessing (900-700BC), the tribe of Simeon was dwindling out of existence. The midrashic book of Jasher, argues that it was Simeon who deceived Hamor by insisting that the men of Shechem would need to be circumcised. It goes on to argue that Simeon was extremely strong, despite only being 14 years old, and was able to slaughter all the men of Shechem nearly single-handedly, only having assistance from his brother Levi, and captured 100 young women, marrying the one named "Bonah".