This is something that some very sharp folks picked up from Biden’s few sane comments the Trump debate. The truth always has a tendency, like water, to leak out.
https://pjmedia.com/news-and-politics/robert-spencer/2020/09/30/why-biden-said-inshallah-during-the-debate-n988636
“One of the most revealing moments of last night’s debate was one that most people probably missed. BuzzFeed’s Hamed Aleaziz was overjoyed, tweeting that it was “a historic moment in America.” Over at Slate, Aymann Ismail added that “as terrible as this debate night was, at least a few of us had this moment.” This glorious occasion came when Donald Trump stated that he would eventually release his tax returns: “I’ve paid millions of dollars, and you’ll get to see it.” Joe Biden responded: “When? Inshallah,” using Arabic for “God willing,” a phrase that is often used in the context of procrastination. Some Muslims were excited about Biden’s colloquial use of the phrase, so as to mean “This is not likely to happen.” “Interfaith and anti-racism educator” Hind Makki tweeted: “Whenever someone who’s not Muslim drops an inshallah in conversation, I assume they have Muslim colleagues. When they know to use it colloquially [sarcastically], I know they have close Muslim friends.” These were just the sort of reactions Biden was doubtless hoping for. Arabic-speaking Christians as well as Muslims say “Inshallah,” but in saying this, Biden was not pandering to Arabic-speaking Christians; he was pandering to the part of his base (Muslim and non-Muslim) that believes that counterterror efforts are largely just an exercise in “Islamophobia” and supports the likes of Ilhan Omar and Rashida Tlaib.