the Tribe of Reuben: did not Assist Against Sisera
Source: TTT
Judges 5:15, 16
The princes of Issachar were with Deborah, and Issachar was with Barak, rushing into the valley at his heels. In the clans of Reuben there was great indecision. / Why did you sit among the sheepfolds to hear the whistling for the flocks? In the clans of Reuben there was great indecision.