And Joshua answered them, If thou be a great people, then get thee up to the wood country, and cut down for thyself there in the land of the Perizzites and of the giants, {i} if mount Ephraim be too narrow for thee.

(i) If this mount is not large enough, why do you not get more by destroying God's enemies, as he has commanded.

Wesley's Notes

17:15 A great people - He retorts their own argument; seeing thou art a great and numerous people, turn thy complaints into action, and enlarge thy borders by thy own hand, to which thou mayest confidently expect God's assistance. The wood - country - To the mountain, as it is called, ver.18, where among some towns there is much wood - land, which thou mayest without much difficulty possess, and so get the more room. And cut down - The wood, for thy own advantage; in building more cities and towns; and preparing the land for pasture and tillage. The Perizzites - Supposed to be a savage and brutish kind of people, that lived in woods and mountains. Giants - Who lived in caves and mountains, now especially when they were driven out of their cities. If mount Ephraim - Or, seeing mount Ephraim is too narrow for thee, as thou complainest; take to thyself the rest of that hilly and wood country. Mount Ephraim was a particular portion of the land, belonging to the tribe of Ephraim. And this seems to be here mentioned, for all the portion allotted to Ephraim and Manasseh, as appears from their complaint, which was not, that this part, but that their whole portion was too strait for them.

King James Translators' Notes

giants: or, Rephaims

Scofield Reference Notes

Margin giants

Or, Rephaims.

Jamieson-Fausset-Brown Bible Commentary

15. mount Ephraim-called so here by anticipation. The Gilboa range between Beth-shean and the plain of Jezreel is meant, anciently covered with an extensive forest.

Matthew Henry's Concise Commentary

17:14-18 Joshua, as a public person, had no more regard to his own tribe than to any other, but would govern without favour or affection; wherein he has left a good example to all in public trusts. Joshua tells them, that what was fallen to their share would be a sufficient lot for them, if they would but work and fight. Men excuse themselves from labour by any pretence; and nothing serves the purpose better than having rich and powerful relations, able to provide for them; and they are apt to desire a partial and unfaithful disposal of what is intrusted to those they think able to give such help. But there is more real kindness in pointing out the advantages within reach, and in encouraging men to make the best of them, than in granting indulgences to sloth and extravagance. True religion gives no countenance to these evils. The rule is, They shall not eat who will not work; and many of our cannots are only the language of idleness, which magnifies every difficulty and danger. This is especially the case in our spiritual work and warfare. Without Christ we can do nothing, but we are apt to sit still and attempt nothing. if we belong to Him, he will stir us up to our best endeavours, and to cry to him for help. Then our coast will be enlarged, 1Ch 4:9,10, and complainings silenced, or rather, turned into joyful thanksgivings.