Robert, Trump or David? Trump has never given a shit about any religion he doesn't attend service at any church and hasn't his entire adult life.
Certainly one can't point to his lifestyle and conclude he is a Christian sexually assulting women, various types of fraud including charity fraud, tax fraud, college fraud, business fraud.
He does use those folks to get what he wants but that is the extent of his belief in Christian nationalism.
Trump is a white nationalist and as such a racist.