'Divisions' in the Bible

“And the princes of Issachar were with Deborah;As was Issachar, so was Barak;Into the valley they rushed at his heels;Among the divisions of ReubenThere were great resolves of heart.

“Why did you sit among the sheepfolds,To hear the piping for the flocks?Among the divisions of ReubenThere were great searchings of heart.