The more you sweat in training, the less you bleed in battle. (Scott Klusendorf of Life Training Institute)
It’s probably another way of saying, “No pain, no gain,” What military recruits learn through the tough days of training may very likely make the difference between injury or life and death. The same could be said about civilian life. We must always be prepared physically, emotionally, and spiritually for the unexpected trials of life. Scripture refers to this as putting on God’s armor.
Therefore, put on every piece of God’s armor so you will be able to resist the enemy in the time of evil. (Ephesians 6:13)