Exod 23:20-23

The Conquest of Canaan Promised 20I am going to send an angel in front of you, to guard you on the way and to bring you to the place that I have prepared.21Be attentive to him and listen to his voice; do not rebel against him, for he will not pardon your transgression; for my name is in him.22But if you listen attentively to his voice and do all that I say, then I will be an enemy to your enemies and a foe to your foes.23When my angel goes in front of you, and brings you to the Amorites, the Hittites, the Perizzites, the Canaanites, the Hivites, and the Jebusites, and I blot them out,