My Brother sent me:

Revelation 9:11 And they had a king over them, which is the angel of the bottomless pit, whose name in the Hebrew tongue is Abaddon, but in the Greek tongue hath his name Apollyon.”

Revelation 11:7 And when they shall have finished their testimony, the beast that ascendeth out of the bottomless pit shall make war against them, and shall overcome them, and kill them.”

Revelation 17:7 And the angel said unto me, Wherefore didst thou marvel? I will tell thee the mystery of the woman, and of the beast that carrieth her, which hath the seven heads and ten horns.

  8 The beast that thou sawest was, and is not; and shall ascend out of the bottomless pit, and go into perdition:”

Then he mentioned his wondering about something a preacher he heard mentioned,

about a possible connection between the Antichrist and Apollyon, more than simply being on the same side.

So, I responded with:

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The son of perdition will go into perdition, according to that scripture..
As far as the angel of the bottomless pit, when did he get there?

John 6:70 Jesus answered them, Have not I chosen you twelve, and one of you is a devil?

Judas, though human, was called a devil.

He was also called the son of perdition:

John 17:12 While I was with them in the world, I kept them in thy name: those that thou gavest me I have kept, and none of them is lost, but the son of perdition; that the scripture might be fulfilled.

Then when Judas killed himself:

Acts 1:25 That he may take part of this ministry and apostleship, from which Judas by transgression fell, that he might go to his own place.

Was "his own place", the bottomless pit?

Was Judas the son of perdition, also because of that devil, and was that devil in Judas, Apollyon,

and went to the bottomless pit when Judas killed himself,

but will be allowed to come back up in the tribulation, to enter into the man of sin, making him also the son of perdition?

II Thessalonians 2:3 Let no man deceive you by any means: for that day shall not come, except there come a falling away first, and that man of sin be revealed, the son of perdition;