Instead of letting Israel pass through his territory, Sihon mustered his entire army and marched out to meet them in the wilderness. He arrived at Jahaz and attacked Israel.

Then they turned toward Bashan. However, Og, the king of Bashan, mustered his army and went out to attack them at Edrei.

So 1,000 men from every tribe 12,000 from the thousands of Israel were mustered and equipped for war.