What does Joshua 10 reveal about who God the Father is?
The Lord is just and he will not allow sin to go unpunished. He promised to bring the descendants of Abraham into the land of Canaan when the sin of the Amorites was completed, and now he is doing so. The Lord is faithful to his promises. He does what he says he will do.
The Lord is mighty and he is the one who destroys his enemies. He uses Israel as an instrument of his judgment but he is the one that has brought great fear on the people of Canaan, and he is the one sends hailstones which kill more people than what Israel kills with the sword (Joshua 10:11)
The Lord listens to the prayers of his people. Whereas Joshua 9 encouraged us to approach the Lord for counsel (Joshua 9:14), Joshua 10 testifies to the fact that the Lord is concerned for his people. He hears and listens to prayers.
1 As soon as Adoni-zedek, king of Jerusalem, heard how Joshua had captured Ai and had devoted it to destruction, doing to Ai and its king as he had done to Jericho and its king, and how the inhabitants of Gibeon had made peace with Israel and were among them,