Sefer Ha-yashar, or, the Book of Jasher…
“ Is it then for naught that they have done all this?54 And now why art thou afraid or distressed, and why art thou displeased at my brothers, and why is thine anger kindled against them?55 Surely our God who delivered into their hand the city of Shechem and its people, he will also deliver into our hands all the Canaanitish kings who are coming against us, and we will do unto them as my brothers did unto Shechem. ”
