Judges 15:8

“And he smote them hip and thigh with a great slaughter, etc.] Either smote them on their hips and thighs with his hands (for it does not appear he had any weapon of war), so that they were sadly bruised, and maimed, and lamed, that they could not stir, and of which blows and bruises multitudes died: or he smote them with his legs on their thighs, kicked them about at pleasure, which kicks numbers of them never got over; or the meaning of the proverbial expression is, he laid on them at a great rate, and smote them here and there, and any where, which issued in the death of many of them: the Targum is, “he smote them horse and foot,” their cavalry and infantry, destroyed them both; but it…”

“smote them hip and thigh--a proverbial expression for a merciless slaughter. he went down and dwelt in the top of the rock Etam--rather went down and dwelt in the cleft--that is, the cave or cavern of the cliff Etam.”

“Hip and thigh - A proverbial expression of doubtful origin, meaning all the “great” and “mighty,” all the choice pieces like the thigh and shoulder. In the top of the rock - Rather, “the cleft of the rock.” These clefts of the rock were the natural fortresses and hiding places of the land. (Isaiah 2:21; Isaiah 57:5. Compare 1 Samuel 13:6; 1 Kings 18:13.) Etam - Not the same as the place in the territory of Simeon 1 Chronicles 4:32. Its situation is uncertain, but a site near Eleutheropolis (“Beth-jibrin”) is required; and there exist some extraordinary caverns in the soft limestone or chalky rock, fifteen or twenty feet deep, with perpendicular sides, opening into extensive excavations in…”

“Hip and thigh - It seems to be a phrase, to express a desperate attack, attended with the utmost hurry and confusion: and perhaps intimates, that they all fled before him. So he smote them in the hinder parts. Rock Etam - A natural fortress, where he waited to see what steps the Philistines would take. Judges 15:11”

“Isa 25:10, Isa 63:3, Isa 63:6 Judges 15:9”

“"Then he smote them hip and thigh (lit. 'thigh upon hip;' על as in Gen 32:12), a great slaughter." שׁוק, thigh, strengthened by על־ירך, is a second accusative governed by the verb, and added to define the word אותם more minutely, in the sense of "on hip and thigh;" whilst the expression which follows, גדולה מכּה, is added as an adverbial accusative to strengthen the verb ויּך. Smiting hip and thigh is a proverbial expression for a cruel, unsparing slaughter, like the German "cutting arm and leg in two," or the Arabic "war in thigh fashion" (see Bertheau in loc.). After smiting the Philistines, Samson went down and dwelt in the cleft of the rock Etam. There is a town of Etam mentioned in Ch2…”