1 Kings 20:29 in the King James Version
And they pitched one over against the other seven days. And so it was, that in the seventh day the battle was joined: and the children of Israel slew of the Syrians an hundred thousand footmen in one day.
Context
28 A man of God came near and spoke to the king of Israel, and said, “The LORD says, ‘Because the Syrians have said, “The LORD is a god of the hills, but he is not a god of the valleys,” therefore I will deliver all this great multitude into your hand, and you shall know that I am the LORD.’”
29 They encamped opposite each other for seven days. Then on the seventh day the battle was joined; and the children of Israel killed one hundred thousand footmen of the Syrians in one day.
30 But the rest fled to Aphek, into the city; and the wall fell on twenty-seven thousand men who were left. Ben Hadad fled and came into the city, into an inner room.