Joshua 17:18

But the mountains shall be thine
Or "for" ^F19 it shall be thine; thou shalt get the possession of it, though attended with difficulties that seem insuperable:

for,
or "if, though" ^F20

it [is] a wood;
the habitation of the Perizzites, and giants, and so dangerous to go un to it, and full of trees, and so seems unprofitable and useless:

and thou shalt cut it down;
both the inhabitants of it, and the trees of it, and clear it of both, and make it both safe and commodious to dwell in, which would be a fine enlargement for them:

and the outgoings of it shall be thine;
all it produces when cultivated, and all the parts adjacent to it:

for thou shall drive out the Canaanites;
this Joshua assures them of, to encourage them to attempt it:

though they have iron chariots, [and] though they [be] strong;
be not afraid of their chariots, though terrible, nor of their giants and mighty men, God will be on your side, and you have nothing to fear from them, see ( Joshua 11:4 Joshua 11:6 ) ; whether the tribes of Ephraim and Manasseh took this advice of Joshua is not said.