In the ancient world, the primary defense of any city was its walls. These walls surrounding the city made an enormous difference in their defensive abilities against any marauding enemy armies. In this Proverb, Solomon, is using a comparison of two things, and then allowing the reader to work out the meaning for themselves. If a city loses its walls, it loses all means of protection against its enemies. Much like if we lose our ability to control or restrain our rational mind, we become vulnerable, defenseless, and susceptible to our enemy, the devil. That’s why self-control is so important in a Christian’s life. Self-discipline is like a wall built up against the temptations of the world, enabling us to be victorious.
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