Albert Barnes Commentary Judges 6:35

"And he sent messengers throughout all Manasseh; and they also were gathered together after him: and he sent messengers unto Asher, and unto Zebulun, and unto Naphtali; and they came up to meet them." — Judges 6:35 (ASV)

His own tribe, Manasseh, and the three northern tribes of Asher, Zebulon, and Naphtali hastened to join him. Issachar was probably unable to do so, because the Midianites were encamped in the heart of their country. Asher no longer abode in his breaches, as in the time of Jabin (Judges 6:17), perhaps ashamed of their former backwardness, and stung by the rebuke of Deborah; perhaps, too, from feeling the Midianite yoke much more galling than that of Jabin.