Our preacher asks the same question at least once a month — about enough evidence to prove you’re a Christian. It makes you stop and think every time.
The referenced “cult” is the Dominionism (7 Mountain) goofball religion.
There was a softcore thread of dominionism in most churches from the 80s on. Exponents such as Falwell, D. James Kennedy, on the cessasionist side, and Earl Paulk, Rick Joyner et al, on the Pentecostal side, were very popular TV guys with some of the people in the pews.
"We are charged with taking the country and the world for Christ, then He will return." That is what Dominionism meant. I don't think most Christians are discerning enough to make the proper distinctions here, theologically.
Now that you mention it, the 7 Mountain stuff is a hardcore recrudescence of that theology. I honestly don't think it has reached full-blown cult status yet; but it is, for sure, an heretical strand.
Talk about cults -- it was amazingly pitiful to me to have seen so many evangelicals following blindly after Ben Carson, not bothering to inquire after his theology, which is, in short, that all who worship on Sunday are part of the antichrist spirit, that Ellen G White is a prophetess of great and worthy note. Yeah, that's an electable guy /sarc