Look at the shift in CONTEXT used by the Watchtower for their own purposes of misidentifying ex-members and slandering them.
First, read the exact target of the statement in the actual scripture.
7 I say this because many deceivers, who do not acknowledge Jesus Christ as coming in the flesh, have gone out into the world. Any such person is the deceiver and the antichrist. 8 Watch out that you do not lose what we [a] have worked for, but that you may be rewarded fully. 9 Anyone who runs ahead and does not continue in the teaching of Christ does not have God; whoever continues in the teaching has both the Father and the Son. 10 If anyone comes to you and does not bring this teaching, do not take them into your house or welcome them. 11 Anyone who welcomes them shares in their wicked work.
Now read the FORCED CONTEXT of the Society:
"All faithful Christians need to take to heart the serious truth that God inspired John to write: “He that says a greeting to [an expelled sinner who is promoting an erroneous teaching or carrying on ungodly conduct] is a sharer in his wicked works.”—2 John 11.
ISN'T IT AMAZING? They have taken a chainsaw to the scripture and stuffed a phony interpretation as a NEW and ERRONEOUS target into the crack!