Then Nahash the Ammonite came up, and encamped against Jabesh Gilead: and all the men of Jabesh said to Nahash, Make a covenant with us, and we will serve you.
It is surprising that Nahash would have granted the citizens of Jabesh-gilead seven days in which to seek help from their fellow Israelites; but it seems to have occurred to Nahash that, after such an effort, his purpose of disgracing all Israel would be even more effective. Besides, his arrogant over-confidence made him certain that they would be unable to get any relief.