Judges 20:1 describes the unified gathering at Mizpah that leads to this declaration; both use 'as one man' for unity.

Judges 20:11 shows the execution of this resolve: Israel gathers against Gibeah 'united as one man' – same unified action.

Judges 21:1 records the oath sworn at Mizpah not to give daughters to Benjamin – a direct consequence of the unified decision here.

Judges 21:5 recalls the assembly at Mizpah and the oath against absentees – reinforcing the unity declared here.

Nehemiah 8:1 also describes people gathering 'as one man' to hear the Law – a strong linguistic parallel to this unity.