Horses, and chariots. The Canaanites had large numbers of chariots (Joshua 11:4; Judges 4:3). The army of Israel was composed of infantrymen; they never lost their fear of armed chariots (Joshua 17:16; Judges 1:19; 1 Sam. 13:5, 6). Not until David’s time did they have chariots of their own (2 Sam. 8:4).
Be not afraid. Jehovah had brought them out of Egypt; He would be with them in the vicissitudes of battle that lay ahead (Ps. 20:6-8).
God is with thee. For the same promise under other circumstances see chs. 1:30, 42; 7:21. Compare the message of Isaiah to Ahaz in his conflict with Rezin and Pekah (Isa. 7:4-14; 8:8, 10).