I always thought demons WERE angels. Created beings who fell and were let loose on the Earth. I do not interpret them to be spirits, nor do I believe angels and demons even Have spirits.
Angels, whether in heaven or otherwise, are spirits, and of the spirit-world. They do not have bodies (normally).
The word "angelos" simply means "messenger." These are God's messengers. They are spirit beings, unless God allows them to take on bodies for a specific purpose such as when God himself and two angels visited Abraham, and then the two angels proceeded to go and visit Lot in Sodom. Such events are highly unusual. Otherwise they remain spirits.
The writer of the Book of Hebrews speaking of the angels said:
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Hebrews 1:14 Are they not all ministering spirits, sent forth to minister for them who shall be heirs of salvation?[/FONT]
--One of the reasons angels were created was to minister to God's children. Here it says clearly that they are spirits. Spirits don't marry.
Basically the Sadducees had asked a foolish question, and Jesus answered them rather sarcastically. In plain English it would be "Don't you know (dummies)..." He wouldn't say that but just to ask a question like "whose shall she be in the resurrection shows that they were not thinking things through.
There will be no marriage in heaven. Not for us; not for angels--ever!
As we know now, the only marriage that there will be is the marriage of the bride of Christ to her groom, the Lord himself.
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Revelation 12:3 And there appeared another wonder in heaven; and behold a great red dragon, having seven heads and ten horns, and seven crowns upon his heads.
4 And his tail drew the third part of the stars of heaven, and did cast them to the earth: and the dragon stood before the woman which was ready to be delivered, for to devour her child as soon as it was born.[/FONT]
--What happened here?
"Dragon" is another name for Satan, and Satan is a spirit. The stars in this passage are also angels that followed Satan. In his rebellion against God Satan took one third of all the angels with him. (spirits)
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Ephesians 6:11 Put on the whole armour of God, that ye may be able to stand against the wiles of the devil.
12 For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.[/FONT]
We don't wrestle against flesh and blood, but against what? spirits!
--Principalities, powers, rulers of the darkness of this works,
spiritual wickedness in high places.
Satan is a spirit.
He is the god (spirit) of this world (2Cor.4:4)
"the spirit that now works in the children of disobedience."