Yes, as Trump would almost certainly put it, you can now buy your "favorite President's" favorite book ... which our sources tell us he autographed during a very turbulent week in the nation, and particularly in Washington, D.C.

We're told he signed it at the White House during the first week of June, just a couple of days after he'd ordered federal law enforcement to fire pepper spray and rubber bullets at peaceful George Floyd protesters ... just to clear a path for him to St. John's Episcopal Church.

You'll recall he posed there for a now-infamous photo op with a Bible ... although that's not the one he signed.

The autographed Bible is going up for sale through the memorabilia company, Moments In Time -- and they're hawking this slice of Trump history for a cool $37,500.

Just the way God intended.

We kid, but Trump's critics might be expecting a lightning strike, because although he's often declared the Bible is his favorite book -- he's declined to name a favorite chapter or verse ... or even weigh in on the Old vs. New Testament debate.

Presidents have a long history of signing Bibles, but the practice has historically been done when presenting it as a gift with a spiritual message written inside.