21 Do not be terrified by them, for the LORD your God, who is among you, is a great and awesome God.

Read Deuteronomy 7:21 Using Other Translations

Thou shalt not be affrighted at them: for the LORD thy God is among you, a mighty God and terrible.
You shall not be in dread of them, for the LORD your God is in your midst, a great and awesome God.
“No, do not be afraid of those nations, for the LORD your God is among you, and he is a great and awesome God.