The next spring1 Ben-Hadad mustered the Arameans and went up to Aphek2 to fight against Israel.
References for 1 Kings 20:26
When the Israelites were also mustered and given provisions, they marched out to meet them. The Israelites camped opposite them like two small flocks of goats, while the Arameans covered the countryside.3
References for 1 Kings 20:27
The man of God came up and told the king of Israel, "This is what the LORD says: 'Because the Arameans think the LORD is a god of the hills and not a god4 of the valleys, I will deliver this vast army into your hands, and you will know5 that I am the LORD.' "
References for 1 Kings 20:28
For seven days they camped opposite each other, and on the seventh day the battle was joined. The Israelites inflicted a hundred thousand casualties on the Aramean foot soldiers in one day.
The rest of them escaped to the city of Aphek,6 where the wall collapsed7 on twenty-seven thousand of them. And Ben-Hadad fled to the city and hid8 in an inner room.
References for 1 Kings 20:30