Albert Barnes Commentary Judges 11:3

"Then Jephthah fled from his brethren, and dwelt in the land of Tob: and there were gathered vain fellows to Jephthah, and they went out with him." — Judges 11:3 (ASV)

The land of Tob - To the north of Gilead, toward Damascus. The readiness with which Jephthah took to the freebooter’s life gives us a lively picture of the unsettled times in which he lived.