Sforno on Deuteronomy 33:22/ספורנו על דברים ל״ג:כ״ב

1גור אריה יזנק מן הבשן. Actually, lions do not grow up in Bashan, a land reserved for cattle, as we know from Psalms 22,13 אבירי בשן, “the mighty ones (bulls) of Bashan.” Lions, as predators do not lie in wait to jump on their prey there. They would only lie in wait in Bashan, a region considered safe from predators, if they planned to attack prey beyond the borders of Bashan. The tactics of the tribe of Dan are compared by Moses to the tactics of the lions. Dan will feel secure in his lair from which he will attack unsuspecting adversaries.