Jesus Christ is quite clear to His followers about the kind of kingdom He came to establish. When Peter drew a sword to defend His Lord from arrest, Jesus said, "My kingdom is not of this world. If it were, my servants would fight to prevent my arrest by the Jewish leaders" (John 18:36). When Jesus said "My kingdom is not of this world' it doesn't mean His kingdom is not in this world, because it is. Rather, Jesus told Peter to put up His sword because the methods by which Jesus' kingdom is advanced are not in the same methods by which the kingdoms of this world are advanced.
The kingdoms of this world, including the United States and all other nations, advance their interests through force and military might, which the Bible calls "the sword." Jesus, however, advances His eternal kingdom through His followers loving their enemies, not demanding back anything that is taken from them, turning the other cheek when struck, refusing to retaliate, and by praying for and blessing those who wish to do them harm (see Luke 6:27-38)
When the kingdom of Jesus has advanced throughout this world - and it is guaranteed that His kingdom will eventually overtake the entire world at some point in time - then "the nations will beat their swords into plowshares and their spears into pruning hooks. Nation will not take up sword against nation, nor will they train for war anymore" (Isaiah 2:4).
Unlike many who praise the video above, I don't like it. Don't misunderstand; I am pro-military, pro-Israel, pro-NRA, pro-conservative, pro-...well, you get the idea. In a world gone wicked, governments of civilized people should bear the sword to strike at the root of evil. Natural law also demands that weapons be used to punish evil doers in those nations intent on protecting individual liberties and personal rights. In addition, the Bible tells us in Romans 13:4 that governments are "God's servant(s) for your good. But if you do wrong, be afraid, for rulers do not bear the sword for no reason. They are God's servants, agents of wrath to bring punishment on the wrongdoer." Nations advance the principles of liberty when evil doers are punished by the government's 'sword.'
But the eternal kingdom of Jesus only advances when individuals give up their personal rights and love their enemies.
Soldiers in uniform are on a mission for the state. I am grateful that our marines, airmen, army and special forces are the tip of the spear for our government in bringing temporal justice to evil doers who behead children, burn pilots, subjugate and rape women, and perpetrate evil. We should increase our military spending, not lessen it. I am an honorary commander this year for an Air Force Base. I love our men and women in uniform.
However, it may be prudent for men and women in the American armed forces to refrain from singing a song like "Days of Elijah" while in their military uniforms (edit: or, as one commenter wisely wrote, 'refrain from publishing the video'). Why? When the enemies of the United States watch this video -- and they will -- they will falsely associate Jesus and His eternal kingdom with American snipers, billion dollar jets, techno-savvy drones, and the finest fighting men and women in the world. In other words, they will think they are fighting Christians intent on killing them. In reality, they are fighting Americans intent on bringing temporary justice.
Our American fighting force is needed in a world full of evil; but nobody enters the eternal kingdom of God at the tip of a sword (are you listening Islamists?) - rather, people find entrance into the eternal kingdom by encountering people who choose to love their enemies, just as Christ chose to love us and die for our sins.
The United States government and the eternal kingdom of Jesus Christ are not the same. I tell the men and women in our church who are employed by the the United States government to serve in our armed forces that they should always remember one thing:
"If an enemy dies on the field of human conflict, the one who kills should be identified as a soldier of the state, and not as a follower of Jesus Christ. A Christian can have enemies, but a Christian can never be the enemy." (Wade Burleson)For those followers of Jesus who cannot separate government service from the personal commands of Jesus to 'love your enemies,' something that I have no problem doing, they should become conscientious objectors to military service. However, those followers of Jesus who have chosen to take on the task of killing evil doers on behalf of our United States' government by bearing the sword of temporal justice, might consider the wisdom of being filmed singing "Days of Elijah" while in military gear.