Among mainstream Christianity, there is a growing sentiment that endorses Christians taking up weapons for their own defense or the defense of others. Some Christians assert that they are justified in killing in self-defense or in anticipation of a crime, believing society would be safer with a more fully armed citizenry. However, the question remains for Christians: Are we ever justified in intentionally killing another human being, even to protect life or property? God's instruction in the scriptures recognizes only two classifications of killing: accidental and intentional. Self-defense is not listed as a possibility. Accidental death occurs when there is no intent to kill or harm, and no awareness that an action will result in death. Intentional killing, even in response to a threat, is defined as murder under God's law. If a man fires a gun with the foreknowledge that it has the potential to kill, it is considered murder. At the core of this issue is the question of whom we allow to govern us. We can either govern ourselves by deciding when it is permissible to kill, or submit to God's authority and His definition of morality. Human nature often insists on prioritizing self-interest over God's law, leading to a willingness to harm or kill to protect personal interests. Taking another man's life in defense of our own also involves acting as judge, jury, and executioner, presuming authority not granted to us by God. Under the New Covenant, God does not promise complete protection from violence. Faithful Christians may suffer harm or persecution, sometimes as a consequence of their actions, and sometimes as part of God's purpose which may not be immediately discernible. Yet, we have His assurance that all things work together for good for those who love Him. Some view God's prohibition against killing as weak, but true strength lies in abiding by His law and trusting in His will, even when threatened. Our faith in God, rather than in self, determines our actions. If God is sovereign in our lives, we will conduct ourselves according to His law, believing in His ability to accomplish His purpose. Regarding Exodus 22:2-3, which addresses a thief being struck and killed while breaking in, the distinction lies between accidental and intentional killing. In darkness, it is harder to determine the necessary level of force, and the law gives the homeowner the benefit of the doubt, assuming no deliberate intent to kill. However, if the act occurs in daylight with clear judgment, and the killing is intentional, it is considered murder. Jesus Christ teaches that murder begins in the heart with intention, reinforcing that intentional killing, even in defense, is against God's law.