Deuteronomy 20:3

saying to them, “Hear, O Israel, today you are going into battle with your enemies. Do not be fainthearted or afraid; do not be alarmed or terrified because of them.
BSB · Berean Standard Bible
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;

Note faint: Heb. be tender

Note tremble: Heb. make haste

KJV · King James Version
and shall tell them, “Hear, Israel, you draw near today to battle against your enemies. Don’t let your heart faint! Don’t be afraid, nor tremble, neither be scared of them;
WEB · World English Bible
and shall say unto them, Hear, O Israel, ye draw nigh this day unto battle against your enemies: let not your heart faint; fear not, nor tremble, neither be ye affrighted at them;
ASV · American Standard Version

Related passages

From the Treasury of Scripture Knowledge, grouped by the word they explain.

let not
Psalm 27:1–3; Isaiah 35:3, 4; Isaiah 41:10–14; Matthew 10:16, 28, 31; Ephesians 6:11–18; 1 Thessalonians 5:15; Hebrews 12:12, 13; Revelation 2:10
faint
Heb. be tender. tremble. Heb. make haste.
Isaiah 28:16
be ye terrified
Psalm 3:6; Isaiah 8:12, 13; Isaiah 57:7, 8; Matthew 8:26; Mark 16:6, 18; Acts 18:9, 10; Acts 27:24; 1 Timothy 6:12; Hebrews 13:6