Deuteronomy 20:3

3 He shall say: “Hear, Israel: Today you are going into battle against your enemies. Do not be fainthearted or afraid; do not panic or be terrified by them.

Read Deuteronomy 20:3 Using Other Translations

And shall say unto them, Hear, O Israel, ye approach this day unto battle against your enemies: let not your hearts faint, fear not, and do not tremble, neither be ye terrified because of them;
and shall say to them, 'Hear, O Israel, today you are drawing near for battle against your enemies: let not your heart faint. Do not fear or panic or be in dread of them,
He will say to them, ‘Listen to me, all you men of Israel! Do not be afraid as you go out to fight your enemies today! Do not lose heart or panic or tremble before them.