2 Kings 23:29
While Josiah was king, Pharaoh Necho king of Egypt went up to the Euphrates River to help the king of Assyria. King Josiah marched out to meet him in battle, but Necho faced him and killed him at Megiddo.
Josiah was one of Israel’s greatest kings. So when he was killed, his death was lamented.
2 Chronicles 35:23-24
Archers shot King Josiah, and he told his officers, “Take me away; I am badly wounded.” So they took him out of his chariot, put him in his other chariot and brought him to Jerusalem, where he died. He was buried in the tombs of his ancestors, and all Judah and Jerusalem mourned for him.
Zechariah used this incident to speak about how people would lament the eventual Messiah.
“And I will pour out on the house of David and the inhabitants of Jerusalem a spirit of grace and supplication. They will look on me, the one they have pierced, and they will mourn for him as one mourns for an only child, and grieve bitterly for him as one grieves for a firstborn son. On that day the weeping in Jerusalem will be as great as the weeping of Hadad Rimmon in the plain of Megiddo.
You see Hadad Rimmon is the city in Megiddo where Josiah fell.
So when John was writing about the return of Jesus and “everyone seeing him” here:
“Look, he is coming with the clouds,”
and “every eye will see him,
even those who pierced him”;
and all peoples on earth “will mourn because of him.”
So shall it be! Amen.
It would have known to the audience at that time that “Armageddon” which simply means Mount Megiddo that it was an incident involving only Jerusalem. This is because John was quoting Zechariah.
This was where Josiah was eventually buried. Jerusalem was that mountain. (Megiddo is a plain, so Mount Megiddo is actually a reference to Jerusalem just like Sodom, Egypt, Babylon and Sinai.)
So when John referred to this:
“Look, I come like a thief! Blessed is the one who stays awake and remains clothed, so as not to go naked and be shamefully exposed.”
Then they gathered the kings together to the place that in Hebrew is called Armageddon.
He was referring to the day the priests, Pharisees and Sadducees were massacred by the Romans in Jerusalem.
These were the kings that John referred to. The high elite religious people.
Also the reference of the thief coming is made here.
1 Thessalonians 5:4-7
But you, brothers and sisters, are not in darkness so that this day should surprise you like a thief. You are all children of the light and children of the day. We do not belong to the night or to the darkness. So then, let us not be like others, who are asleep, but let us be awake and sober. For those who sleep, sleep at night, and those who get drunk, get drunk at night. But since we belong to the day, let us be sober, putting on faith and love as a breastplate, and the hope of salvation as a helmet.
Remain clothed. Put on faith and love as a breastplate, and the hope of salvation as a helmet.
Now who was the “thief’s” enemy?
Same book just a few chapters before it.
1 Thessalonians 2:14-17
For you, brothers and sisters, became imitators of God’s churches in Judea, which are in Christ Jesus: You suffered from your own people the same things those churches suffered from the Jews who killed the Lord Jesus and the prophets and also drove us out. They displease God and are hostile to everyone in their effort to keep us from speaking to the Gentiles so that they may be saved. In this way they always heap up their sins to the limit. The wrath of God has come upon them at last.
So where would the battle take place?
Where and how people read it as a world wide end of the world battle, God only knows.