Numbers 9:6 describes men coming before Moses and Aaron with a ritual problem — another instance of bringing a case to the leadership.

In Numbers 15:33, a similar case is brought to Moses and the congregation for judgment — a precedent for bringing disputes to the community leaders.

Deuteronomy 17:8-10 commands bringing hard cases to priests and judges — exactly what the daughters do before Moses and Eleazar.

Exodus 18:22 instructs that difficult cases be brought to Moses — this is precisely such a case, demonstrating the rule in action.

Exodus 18:19-26 establishes a hierarchy of judges; here Moses acts on a hard case, consistent with that system.

Exodus 18:13 depicts Moses judging the people from morning to evening — the same role he exercises when the daughters approach him.