Jesus gave an illustration at Matthew 13 whereby the one true religion that he established and went into operation on Pentecost 33 C.E. would apostasize or "fall away" from his teachings, corrupting them.(Matt 13:24-30, 36-43) Following the death of the apostles, with John dying in about 100 C.E., the "antichrists" began to flourish, those who discounted Jesus words or twisted them.veteran said:It's not that easy to put the historical Revisionist Pacifist swing to early Christians that some here would lead us to believe.
Marinus of Caesarea, Julius the Veteran of the 2nd century are prime examples of early Christians serving in the military. Marinus was a centurion, and upon promotion was required to do a pagan sacrifice. He refused but kept The Faith instead and was executed.
Emperor Diocletian (285 B.C.) tried to purge Christians from the military but did not succeed. Some scholars believe that Constantine's conversion to Christianity was helped because of these Christian Romans, even those that were of the imperial household!
2 Cor.10 by Apostle Paul is not about any idea of not serving in the military. It instead is Apostle Paul proclaiming that The Gospel Itself does the conquering, and not by man's weapons of war. He is alluding to conquering by The Spirit, a completely different subject than the Pacifist's ideas of not serving in the military.
John wrote in about 98 C.E.: "Young children, it is the last hour (before the apostasy begins to blossom fully), and, just as you have heard that antichrists is coming (those who rejected or distorted Jesus and his words), even now there have come to be many antichrists; from which fact we gain the knowledge that it is the last hour (before these fully take over the congregation like a disease). They went out from us (ones from within the Christian congregation), but they were not of our sort (these set their own perimeters of "right and wrong", like Adam and Eve, Gen 3:6); for if they had been of our sort, they would have remained with us (instead of pushing ahead and discarding Jesus words at Matt 5:43-48 concerning godly love and military service). But they went out that it might be shown up that not all are of our sort."(1 John 2:18, 19)
These ones could not stand the thought of adhering to Jesus words, and hence set out on their own, apart from the Christian congregation, with the last surviving apostle John counseling true Christians that "antichrists" (meaning literally " against (or instead of) Christ") would be multiplying and argue against Jesus words to show genuine love, that military service does not violate God's law of love.
Only about some 75 years after the apostle John's death, it is noted that so-called "Christians" were now joining the military. Apostasy was making headway and was like a garden that is eventually overtaken by "weeds". These "weeds" that Jesus said that Satan had "oversown" especially after the death of the apostles were counterfeit Christians (Matt 13:25), false Christians, "wolves in sheep's clothing" (Matt 7:15) that now began to "rise and speak twisted things to draw away the disciples after themselves."(Acts 20:30)
They allowed the thinking of the "world", the spirit of independence to dominate them and pushed this ideology (Eph 2:2), whereby joining the military was now "right" in their eyes, to fight for one's nation rather than fight for the Christ and his teachings. Jesus said that the "weeds" would be allowed to grow down till the "harvest" with the "wheat" (genuine Christians), our time period.(Matt 13:29, 30)
However, Jesus said that during the time of the "harvest" that matters would be set straight. The "weeds" or imitation Christians, those who argue for military service among a whole host of "wrong" things, would be separated from among the "wheat", "sons of the kingdom", and be burned up. Now the the "weeds" are being exposed for who they are and the "wheat" are ' shining as brightly as the sun in the kingdom of their Father.'(Matt 13:43)
At Revelation 6, after the 5th seal was opened, the apostle John said that he "saw underneath the altar the souls of those slaughtered because of the word of God and because of the witness work that they used to have." These ones wondered when God will bring justice in their behalf, but God said for them "to rest a little while longer, until the number was filled also of their fellow slaves and their brothers who were about to be killed as they also had been."(Rev 6:9-11)
These would not violate Jehovah's law on love, refusing to join the military as well as in Caesar's time to offer a pinch of incense to him as the emperor, and there received the wrath of the state, many being killed. These would not trust in an "arm of flesh", the military might of nations such as Rome.(Jer 17:5) Rather these followed in Jesus "footsteps" (1 Pet 2:21) to make "the name of Jehovah....a stronghold", whereby "into it the righteous run and is given protection."(Prov 18:10) When "being reviled, (Jesus) did not go reviling in return".(1 Pet 2:23)
N. Platt and M.J. Drummond wrote: "The behavior of the Christians was very different from that of the Romans....Since Christ had preached peace, they refused to become soldiers."(Our World Though the Ages, 1961, pg 125) And R and W. M.West wrote that "the first Christians (later so-called Christians did not agree, joining the military) thought it was wrong to fight, and would not serve in the army even when the Empire needed soldiers."(The New World's Foundation in the Old, 1929, pg 131)