America's Churches - Are We Being Defeated?

Are we winning the battles or being defeated by small armies of the enemy as Israel was by Ai? After their victorious march in obedience to God around Jerico, they later are defeated by a people whom they should have easily taken, all due to the disobedience of Achan - one person, but the whole of Israel was affected by it. Likewise, each of us should closely examine ourselves to see if we are the cause of our own congregations lack of victory.