Ramban on Genesis
THESE MEN ARE PEACEABLE WITH US. The men of the city thought that they hated them as they saw them dejected, and it angered them very much. Perhaps they guarded themselves against them and installed in their city bars and doors, for Jacob’s sons were mighty men and valiant men for the war.174Jeremiah 48:14. But now Hamor and his son Shechem told them, “Do not fear and do not keep distant from them for they are whole-hearted with us.”
Sforno on Genesis
שלמים הם אתנו, they are of a totally peaceful disposition towards us. They do not intend to revenge themselves for the indignity their family has suffered.