This is about Donald Trump, and not the song from which the above phrase was drawn, nor about the Bible passage from which the phrase was adapted.
I am not at all a Trump supporter or fan. I am just an alien and stranger here, which means that I can look at things from a more, um, unbiased perspective. So Trump is a crude talker with no sense of propriety. Certainly that would disqualify him as a presidential candidate on the planet where I come from, but we are here on Earth and it is not even permissible for me to name the planet from which I come nor are any of my cultural oddities tolerated here. So I will not attempt to judge Trump according to my standards.
But what are the standards of Earth? Bruce Willis? Or maybe we would like to consider some typical uplifting rap lyrics. There may have been a time when people kept their foul language under control, at least in public, but now crude language is pretty much the standard. Today much of America wouldn't be able to communicate if they didn't have the F-word. It is a noun, a verb, an adjective, an adverb, and even extends to a few linguistically yet-to-be identified categories. There are, of course, some oddballs who today maintain a distinction between their public and private language. This was considered respectable behavior when I was young, but today is deemed to be somewhere between two-faced and hypocritical. I would argue that Trump is actually a centrist, since the use of bad language all the time is now the American norm, but Trump's language is more of a middle of the road type of foul language and much more limited in its rage than Black Lives Matters, Feminists, and especially university professors. Certainly there is some sincere anger both in Trump's rhetoric and in his followers, but again, this is more middle of the road, and much more tame than other groups that are accepted by the American mainstream.
When this election is all done, I hope to gather up all my notes and send them back to my home planet for some more expert analysis.