Faith to Overcome Obstacles by Pastor Nate Nix. In this beautiful sermon, we are going to look at the life of Joshua and how he led them to conquer Jericho. The Bible tells us that the Lord told Joshua that the land and the king was in his hands and that the walls of the city would fall flat. It is through Joshua's obedience to the Word of God that he acts on his faith and he overcomes the obstacles in his life. We need to have faith like Joshua.