that by them I may prove Israel, whether they will keep the way of Yahweh to walk therein, as their fathers did keep it, or not."

Now these are the nations which Yahweh left, to prove Israel by them, even as many [of Israel] as had not known all the wars of Canaan;

They were [left], to prove Israel by them, to know whether they would listen to the commandments of Yahweh, which he commanded their fathers by Moses.