From whence come wars and fightings among you? Come they not hence, even of your lusts that war in your members?
As I contemplate human nature and human life, what astonishes me is not that God allows and permits war, but the patience and the long-suffering of God. “He maketh his sun to rise on the evil and on the good, and sendeth rain on the just and on the unjust” (Matthew 5:45). He suffered the evil, perverse ways of the children of Israel for centuries; and now for nearly two thousand years He has patiently borne with a world that in the main rejects and refuses His loving offer, even in the Person of His only-begotten Son. The question that needs to be asked is not, “Why does God allow war?” but rather, “Why does God not allow the world to destroy itself entirely in its iniquity and its sin?” Why does He in His restraining grace set a limit to evil and to sin, and a bound beyond which they cannot pass?
Oh, the amazing patience of God with this sinful world! How wondrous is His love! He has sent the Son of His love to our world to die for us and to save us; and because men cannot and will not see this, God permits and allows such things as war to chastise and to punish us, to teach us and to convict us of our sins, and above all to call us to repentance and acceptance of His gracious offer. The vital question for us therefore is not to ask, “Why does God allow war?” The question for us is to make sure that we are learning the lesson and repenting before God for the sin in our own hearts and in the entire human race that leads to such results. May God grant us understanding and the true spirit of repentance, for His name’s sake.
– Martyn Lloyd-Jones