They support Trump because it's expedient to do so. Trump's attacking the people they want attacked. These people ultimately think they're only beholden to their imaginary god, not to "earthly" laws. They are America's version of ISIS. Obviously, the U.S. is a developed country so the ooga booga-ness of the evangelical far right looks different than the fanaticism of the Middle East where people are generally are generally very poor and exploited. What it looks like here is this: 
https://www.nytimes.com/interactive/2015/11/29/us/30abortion-clinic-violence.html
https://www.nbcnews.com/news/us-news/abortion-clinics-report-threats-violence-rise-n719426
Americans have allowed these people to force their views on American women. Everyone can work to stop what they're doing. 
Or we can start doing to churches what they have done to American women. Americans have a choice. Respect women's privacy or we'll tear this country apart, starting with the churches.