2
Only because of the generations of the children of Israel, for the purpose of teaching them war--only those who up till then had no experience of it;
2
(The only reason the Lord left those nations in the land was to teach the descendants of the Israelites who had not fought in those wars how to fight.)
2
and that afterward the sons of them should learn to fight with enemies, and to have custom of battle. (and so that through them their sons would learn to fight with their enemies, and know the ways of battle.)