Judges 11:31

11:31 then whoever is the first to come through the doors of my house to meet me when I return safely from fighting the Ammonites – he will belong to the Lord and I will offer him up as a burnt sacrifice.”

Judges 21:5

21:5 The Israelites asked, “Who from all the Israelite tribes has not assembled before the Lord?” They had made a solemn oath that whoever did not assemble before the Lord at Mizpah must certainly be executed.