Exodus 18:13

13. On the morrow After the sacrificial feast described in Exodus 18:12. The duties of friendship, love, and hospitality must give place to those of public responsibility and care. The very next day after the joyful feast the great lawgiver and judge resumes his arduous work. It has been suggested that difficulties arising out of the division of the spoil of the Amalekites occasioned the disputes which Moses sat all day to decide. This, however, is a pure supposition, and we have no evidence that the Israelites captured any considerable amount of spoil from the defeated Amalekites. Various causes of dispute and strife would naturally arise from time to time among the thousands of Israel, and nothing can be determined from this fact as to the date of Jethro’s visit.