Matthew Poole and continuators on Joshua 17:16

16 And the children of Joseph said, The hill is not enough for us : and all the Canaanites that dwell in the land of the valley , have charets of iron , both they who are of Beth-shean, and her towns, and they who are of the valley of Jezzeel .

If we should Invade and Conquer it, and cut down both Wood and Men, yet it would not be sufficient for us. Heb. The Hill will not be found, i. e. obtained by us; those fierce and strong people the Perizzites and the Giants will easily defend themselves, and frustrate our attempts, having the advantage of the Woods and Mountains.

i. e. And if thou sayest, as we know thou wilt reply, That if the Hill either cannot be Conquered, or be not sufficient for us, we may go down and take the more Land out of the pleasant and fruitful Valleys, we shall meet with no less difficulty there than in the Mountains. Or thus, in going to the Hills to which thou directest us, we must pass through Valleys; where we shall be way-laid by powerful and armed Enemies.

Not all made of Iron, but armed with Iron, not only for Defence, but for Offence also, having as it were Sithes and Swords fastned to them, to cut down all that stood in their way.

Which was either in the Tribe of Issachar, or upon the Borders of it, Ios. 19. 18.

Marginal references: Judg. 4. 3.