In Joshua 6:12, the Israelites are instructed to march around the city of Jericho once a day for six days, with the priests carrying trumpets of ram's horns before the ark of the covenant. This act of obedience and faith in following God's unconventional battle plan demonstrates the importance of trusting in God's guidance and timing, even when His methods seem unusual or illogical. The Israelites' obedience paves the way for the miraculous fall of Jericho's walls on the seventh day, showcasing the power of God at work when His people align themselves with His will.