Ammonites under the command of Jephthah without the co-operation of the Ephraimites, Ephraim thought it necessary to assert its claim to take the lead in Israel in a very forcible manner. The Ephraimites gathered themselves together, and went over צפונה. This is generally regarded as an appellative noun (northward); but in all probability it is a proper name, “to Zaphon,” the city of the Gadites in the Jordan valley, which is mentioned in Jos 13:27 along with Succoth, that is to say, according to a statement of the Gemara, though of a very uncertain character no doubt, Ἀμαθοῦς (Joseph. Ant. xiii. 13, 5, xiv. 5, 4; Bell. Judg. i. 4, 2, Reland, Pal. pp. 308 and 559-60), the modern ruins of Amata on the Wady Rajîb or Ajlun, the situation of which would suit this passage very well. They then threatened Jephthah, because he had made war upon the Ammonites without them, and said, “We will burn thy house over thee with fire.” Their arrogance and threat Jephthah opposed most energetically. He replied (Jdg 12:2, Jdg 12:3), “A man of strife have I been, I and my people on the one hand, and the children of Ammon on the other, very greatly,” i.e., I and my people had a severe conflict with the Ammonites. “Then I called you, but ye did not deliver me out of their hand; and when I saw that thou (Ephraim) didst not help me, I put my life in my hand” (i.e., I risked my own life: see 1Sa 19:5; 1Sa 28:21; Job 13:14. The Kethibh אישׂמה comes from ישׂם: cf. Gen 24:33), “and I went against the Ammonites, and Jehovah gave them into my hand.” Jephthah's appeal to the Ephraimites to fight against the Ammonites it not mentioned in Judg 11, probably for no other reason than because it was without effect. The Ephraimites, however, had very likely refused their co-operation simply because the Gileadites had appointed Jephthah as commander without consulting them. Consequently the Ephraimites had no ground whatever for rising up against Jephthah and the Gileadites in this haughty and hostile manner; and Jephthah had a perfect right not only to ask them, “Wherefore are ye come up against me now (lit. 'this day'), to fight against me?” but to resist such conduct with the sword.
Verse 4
He therefore gathered together all the men (men of war) of Gilead and smote the Ephraimites, because they had said, “Ye Gileadites are fugitives of Ephraim in the midst of Ephraim and Manasseh.” The meaning of these obscure words is probably the following: Ye Gileadites are a mob gathered together from Ephraimites that have run away; “ye are an obscure set of men, men of no name, dwelling in the midst of two most noble and illustrious tribes” (Rosenmüller).
