Joshua 8:6-8

(for they will come out after us) till we have drawn them from the city; for they will say, They flee before us, as at the first: therefore we will flee before them. Then ye shall rise up from the ambush, and seize upon the city: for the LORD your God will deliver it into your hand. And it shall be, when ye have taken the city, that ye shall set the city on fire: according to the commandment of the LORD shall ye do. See, I have commanded you.