The piece from The Economist that is referenced by the article gets into it:

In a Pew poll in 2021, more than a third of white evangelicals said the government should stop enforcing the separation of church and state.

To that end, apostles engage in political activism. They shun the Democratic party (membership is a form of “demonic worship”, Mr Hood has written) and cultivate ties with Republicans. Representatives Marjorie Taylor Green, Lauren Boebert and Mike Johnson, the new speaker of the House, are affiliated with the movement. Mr Trump is central to its plans.

During the presidential campaign of 2016, Mr Wallnau observed that Mr Trump had already climbed the mountains of media and business and said God had foretold that he would also conquer the government peak. The rest of the apostolic movement quickly endorsed Mr Trump. Several of its leaders advised him during his presidency and formed a “spiritual strike force” called POTUS Shield to protect him from Satan. Many prophesied that he would win re-election in 2020, and their followers believed them. In a survey conducted by Mr Djupe shortly before the election, three in ten Americans believed Mr Trump “was anointed by God to become president”.

Edit:
Link to the Economist article: https://www.economist.com/christmas-specials/2023/12/20/many-trump-supporters-believe-god-has-chosen-him-to-rule
It’s paywalled.