Cross reference
Judges 4:13
13 So Sisera got together all his war-carriages, nine hundred war-carriages of iron, and all the people who were with him, from Harosheth of the Gentiles as far as the river Kishon.
Judges 4:2-3
2 And the Lord gave them up into the hands of Jabin, king of Canaan, who was ruling in Hazor; the captain of his army was Sisera, who was living in Harosheth of the Gentiles.
3 Then the children of Israel made prayer to the Lord; for he had nine hundred iron war-carriages, and for twenty years he was very cruel to the children of Israel.
Judges 4:7
7 And I will make Sisera, the captain of Jabin's army, with his war-carriages and his forces, come against you at the river Kishon, where I will give him into your hands.