What “the abomination that causes desolation” mentioned in Mathew 24:15 means could be understood only by close followers of Jesus because it was part of his personal discussion with them. By stopping to greet those whom they consider as “their enemies” JWs are identifying themselves as “pagans,” according to Jesus. (Mathew 5:43-48) Thus they cannot correctly understand what the abomination that causes desolation” that would appear as part of signs of “Last Days.”
Their most celebrated teaching is “The Issue of vindication of Jehovah’s sovereignty (jehovahs-sovereignty/). This teaching is the “the abomination that causes desolation” because it depicts God as behaving like a mere, puny human who feels challenged on thoughtless criticism of somebody and feels the need of vindicating himself at any cost such as all the deaths, killings, diseases and suffering from the beginning of history. All of them happened because God took Satan’s lie seriously. God is supremely benevolent, a title even Jesus felt disturbed when used for him by a learned person. (Mark 10:17, 18) Such a supremely benevolent person can never be dragged into an issue or controversy of any sort because whatever HE does is ALWAYS good and just.