Joshua 6:1-3, 11-15
v. 1 Now Jericho was securely shut up because of the children of Israel; none went out, and none came in. 2 And the Lord said to Joshua: “See! I have given Jericho into your hand, its king, and the mighty men of valor. 3 You shall march around the city, all you men of war; you shall go all around the city once. This you shall do six days.
v.11 So he had the ark of the Lord circle the city, going around it once. Then they came into the camp and lodged in the camp. 12 And Joshua rose early in the morning, and the priests took up the ark of the Lord. 13 Then seven priests bearing seven trumpets of rams’ horns before the ark of the Lord went on continually and blew with the trumpets. And the armed men went before them. But the rear guard came after the ark of the Lord, while the priests continued blowing the trumpets. 14 And the second day they marched around the city once and returned to the camp. So they did six days. 15 But it came to pass on the seventh day that they rose early, about the dawning of the day, and marched around the city seven times in the same manner. On that day only they marched around the city seven times.
God is saying surrender your problems which are as Jericho walls to me and I will crumble it down. Put up a "Prayer fence" around the problem, but don't touch it, and ask God to tear it down. Our God is a God who listens to our prayers and responds to them.