Deuteronomy 20:4 - Coke's Commentary on the Holy Bible

Ver. 4. For the Lord your God is he that goeth with you— The ark, the symbol of God's presence, went sometimes before them, and sometimes in the midst of them; Joshua 3:10-11; Joshua 6:9. So that God was then properly said to go with them; and at all other times he was present to aid them, especially against the people of Canaan, their battles with whom were called the wars of the Lord. See Eusebius's Life of the Emperor Constantine, lib. 4: cap. 20. The word rendered tremble, in the 3rd verse, is the same which is elsewhere rendered to make haste, 2 Samuel 4:4.Psalms 48:5. It signifies to be in haste, or hurry through fear.