3 And shall say unto them, Hear, O Israel, ye approach this day unto battle against your enemies: let not your hearts faint, faint: Heb. be tender fear not, and do not tremble, neither be ye terrified because of them;
English Standard Version
3 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,
3 He'll say, "Attention, Israel. In a few minutes you're going to do battle with your enemies. Don't waver in resolve. Don't fear. Don't hesitate. Don't panic.
New King James Version
3 And he shall say to them, 'Hear, O Israel: Today you are on the verge of battle with your enemies. Do not let your heart faint, do not be afraid, and do not tremble or be terrified because of them;
New Living Translation
3 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.
In the wars wherein Israel engaged according to the will of God, they might expect the Divine assistance. The Lord was to be their only confidence. In these respects they were types of the Christian's warfare. Those unwilling to fight, must be sent away. The unwillingness might arise from a man's outward condition. God would not be served by men forced against their will. Thy people shall be willing, Isaiah 8:12.