In modern times it may not even seem like an issue if a Christian can or cannot serve in the military, clearly Christians today and for many centuries do, so what would the issue be? On the other hand, anyone who has honestly read the gospels must recognize that the issue of violence is at the very least problematic in Jesus’s teachings. One would simply have to point to the Sermon on the Mount (Matthew 5:38–47) or the Sermon on the Plain (Luke 6:27–31), or his teaching on the one taking the sword dying by the sword (Matthew 26:52), to recognize that Jesus tended to reject violence.
I love it when Christian Zionists invoke God’s Holy Word to justify the Israeli theft of Palestinian land, such as this from Reverend John Hagee:
“Israel exists because of a covenant God made with Abraham, Isaac and Jacob 3,500 years ago — and that covenant still stands,” Mr. Hagee thundered. “World leaders do not have the authority to tell Israel and the Jewish people what they can and cannot do in the city of Jerusalem.”