John Wesley on Joshua 11:23

The whole land - That is, the greatest and best part of it, for some parts are expressly excepted in the following history. All that the Lord said unto Moses - God had promised to drive out the nations before them. And now the promise was fulfilled. Our successes and enjoyments are then doubly comfortable, when we see them flowing to us from the promise. This is according to what the Lord hath said: our obedience is acceptable, when it has an eye to the precept. And if we make a conscience of our duty, we need not question the performance of the promise.