Flavius Josephus, Antiquities of the Jews
William Whiston, A.M., Ed.

[175] NOW it happened that the tribe of Dan suffered in like manner with the tribe of Benjamin; and it came to do so on the occasion following: - When the Israelites had already left off the exercise of their arms for war, and were intent upon their husbandry, the Canaanites despised them, and brought together an army, not because they expected to suffer by them, but because they had a mind to have a sure prospect of treating the Hebrews ill when they pleased, and might thereby for the time to come dwell in their own cities the more securely; they prepared therefore their chariots, and gathered their soldiery together, their cities also combined together, and drew over to them Askelon and Ekron, which were within the tribe of Judah, and many more of those that lay in the plain. They also forced the Danites to fly into the mountainous country, and left them not the least portion of the plain country to set their foot on. Since then these Danites were not able to fight them, and had not land enough to sustain them, they sent five of their men into the midland country, to seek for a land to which they might remove their habitation. So these men went as far as the neighborhood of Mount Libanus, and the fountains of the Lesser Jordan, at the great plain of Sidon, a day's journey from the city; and when they had taken a view of the land, and found it to be good and exceeding fruitful, they acquainted their tribe with it, whereupon they made an expedition with the army, and built there the city Dan, of the same name with the son of Jacob, and of the same name with their own tribe.