Deuteronomy 7:21 KJV
Thou shalt not be affrighted at them: for the Lord thy God is among you, a mighty God and terrible.
Deuteronomy 7:21, King James Version
In context
20 Moreover the Lord thy God will send the hornet among them, until they that are left, and hide themselves from thee, be destroyed.
21 Thou shalt not be affrighted at them: for the Lord thy God is among you, a mighty God and terrible.
22 And the Lord thy God will put out those nations before thee by little and little: thou mayest not consume them at once, lest the beasts of the field increase upon thee.