Lack of self-discipline results in defeat, for it becomes easy for another to dominate the weak.
People who cannot control themselves are like cities without walls to protect them.
Proverbs 25.28 ERV
The strength of a person is in his self-control. We learn to dominate the passions and control mind and body through the will of God, the example of Christ, and the power of the Spirit.
Alone, we are like the unprotected city, an open invitation to manipulation and domination.