God's methods are often not our methods
Scripture reference
Matthew 16:22–23 (ASV)
22And Peter took him, and began to rebuke him, saying, Be it far from thee, Lord: this shall never be unto thee. 23But he turned, and said unto Peter, Get thee behind me, Satan: thou art a stumbling-block unto me: for thou mindest not the things of God, but the things of men.
Stories
Miss Gregg learned that God does not do things for us so that we will serve him, nor does He always accomplish His will according to our expectations. She had to trust Him to clear up the quarrels that were obstructing His work.