Exodus 23:20-22

“Behold, I send an Angel before you to keep you in the way and to bring you into the place which I have prepared. Beware of Him and obey His voice; do not provoke Him, for He will not pardon your transgressions; for My name is in Him. But if you indeed obey His voice and do all that I speak, then I will be an enemy to your enemies and an adversary to your adversaries.