"Are we allowed to judge these people as false teachers? shouldn't we pray for them rather than condemn them because of differences in theology?"...RAINMAN..........
Differences in theology versus evil deceivers; servants of Satan...The bible says that they are to be rebuked and marked.
REBUKED AND MARKED. NOT "PRAYED FOR".
3.I found it necessary to write to you exhorting you to contend earnestly for the faith which was once for all delivered to the saints.
4. For certain men have crept in unnoticed, who long ago were ....MARKED OUT .....for this condemnation, ungodly men, who turn the grace of our God into lewdness and deny the only Lord God and our Lord Jesus Christ.
5 But I want to remind you, though you once knew this, that the Lord, having saved the people out of the land of Egypt,
....afterward destroyed those who did not believe.
6 And the angels who did not keep their proper domain, but left their own abode, He has reserved in everlasting chains under darkness for the judgment of the great day;
7 !!!!as Sodom and Gomorrah, and the cities around them in a similar manner to these, having given themselves over to sexual immorality and gone after strange flesh, are set forth as an example,!!!...and the false teachers too?????
"suffering the vengeance of eternal fire."
8 Likewise also these dreamers defile the flesh, reject authority, and speak evil of dignitaries. 9 Yet Michael the archangel, in contending with the devil, when he disputed about the body of Moses, dared not bring against him a reviling accusation, but said, [..and REBUKED!]
“The Lord rebuke you!”
10 But these speak evil of whatever they do not know; and whatever they know naturally, like brute beasts, in these things they corrupt themselves.
11 Woe to them! For they have gone in the way of Cain, have run greedily in the error of Balaam for profit, and perished in the rebellion of KoraH.
12 These are spots in your love feasts, while they feast with you without fear, [ AND HERE'S WHY...]
[THEY are]..."serving only themselves."
They are clouds without water, carried about[c] by the winds; late autumn trees without fruit, twice dead, pulled up by the roots; 13 raging waves of the sea, foaming up their own shame; wandering stars for whom is reserved the blackness of darkness forever. THE APOSTLE JUDE.
The false teachers murder the body of Christ, and most simply to draw away disciples unto themselves for their own gain....[Acts 20:30]...This crew especially.