VayishlachReturning home, Ya’akov sends angelic messengers to appease his brother Esav. The messengers return, telling Ya’akov that Esav is approaching him with an army of four hundred men. Ya’akov takes the strategic precautions of dividing the camps, praying for assistance, and sending a tribute to mollify Esav. That night, Ya’akov is left alone, and wrestles with the angel of Esav. Although Ya’akov emerges victorious, he is left with an injured sinew in his thigh (which is the reason that it is forbidden to eat the sciatic nerve of a kosher animal).