It happened, when Jabin king of Hazor heard of it, that he sent to Jobab king of Madon, and to the king of Shimron, and to the king of Achshaph,
This third and final major campaign does not appear to have been providentially aided as in the instance of Jericho and Beth-horon, except in the commandment which God gave to Joshua to "strike now."  The significance of that timeliness of the attack is evident in this comment by Cook: