Deuteronomy 31:3

and have him stand before Eleazar the priest and before all the congregation, and commission him in their sight.

‘But command Joshua and strengthen him and encourage him, for he shall go across at the head of this people, and he will cause them to inherit the land which you will see.’

“So you shall know today that it is Yahweh your God who is crossing over before you as a consuming fire. He will destroy them, and He will subdue them before you, so that you may dispossess them and make them perish quickly, just as Yahweh has spoken to you.