Apostle Paul said that as much as it is possible within you, make peace with all men. With some men one is just not able to do this, which is why Paul said that.
A couple of false teachings by Christ's enemies has led many brethren away from keeping a weapon to protect themselves, their home, family, etc. The turn the other cheek example by Lord Jesus was in a situation where the disciples were spreading The Gospel; they were slapped for it. It was not a life or death situation like a robber or murderer coming at them, but a result of preaching The Gospel by those who hate Christ. In those cases, Jesus said offer the cheek also.
But Jesus' command for His disciples to go buy a sword is about the God-given right one has to protect themselves from robbers, thieves, murderers, invading armies, etc. Lord Jesus did not nail all... of God's laws upon His cross. This is why many of God's laws were actually preached by Apostle Paul in 1 Timothy 1, 1 Corinthians 6, and Galatians 5. Paul said the law was made for the unholy and sinner. That has not changed.
Who wants... to change that though? We are shown who, in the Book of Daniel...
Dan 7:25
25 And he shall speak great words against the most High, and shall wear out the saints of the most High, and think to change times and laws: and they shall be given into his hand until a time and times and the dividing of time.
KJV
One of the long-range Soviet Communist strategic points that ex-KGB defector to the U.S., Anatoliy Goliytsn noted in his book New Lies For Old, was when the Soviets had the plan since 1958 to infiltrate the western Churches and push pacifist and disarmament dogma.
Luckily today, many U.S. State Representatives have seen the writing on the wall, and have passed open carry of firearms for U.S. citizens in many States. Today those States are actually promoting... that U.S. citizens go buy a firearm and learn how to use it.
In 1903, the U.S. War Department created the Civilian Marksmanship Program (CMP). It was designed to keep American citizens proficient with a rifle in case war broke out. American citizens were trained by the U.S. military.
I recall in the 1980's on Face The Nation, Sarah Brady was being interviewed, as her husband was paralyzed by a shooter attempt on the U.S. President, and she advocated against gun ownership. The show host asked her what she thought about the Florida crime rate going down after open firearm carry was passed there. She continually lied and said it didn't go down, but went up because of open carry. What open carry in Florida did was force the criminals to go after people they knew were NOT armed, so they waited to rob people coming out of airports that just got off an airplane, because they knew those people were not armed. Gun carry works. Too bad it is needed, but it does work.