Judges 4:13

Sisera summoned all his chariots--all nine hundred chariots of iron--and the entire army that [was] with him from Harosheth Haggoyim to the wadi of Kishon.

Judges 4:2-3

So Yahweh sold them into the hand of Jabin king of Canaan, who reigned in Hazor. The commander of his army [was] Sisera, and he [was] living in Harosheth Haggoyim.

Judges 4:7

{I will draw out} Sisera, the commander of Jabin's army, with his chariots and troops, to the wadi of Kishon, and I will give him into your hand.'"

Treasury of Scripture Knowledge

Summary

And Sisera gathered together all his chariots, even nine hundred chariots of iron, and all the people that were with him, from Harosheth of the Gentiles unto the river of Kishon.

Nine

Bible References

Nine

Judges 4:2
So Yahweh sold them into the hand of Jabin king of Canaan, who reigned in Hazor. The commander of his army [was] Sisera, and he [was] living in Harosheth Haggoyim.