What did Donald Trump do today?

He offered Christmas blessings as only he does.

Today, Trump posted Christmas greetings on his private social media network. Following his usual practice, his "merry Christmas" message was a series of sarcastic attacks on his real and imagined enemies, mixed in with some of his recent obsessions like annexing Panama and Greenland.

These posts were the cap to a  a 34-post rant elaborating on these and other grievances that Trump spent Christmas morning on, at a time when many Christians attend church or open presents together.

Christmas, which celebrates the birth of Jesus, is one of the most important holidays on the Christian liturgical calendar. Trump nominally identifies as a Christian, and has tried to make money selling Trump-branded Bibles. But he virtually never attends church, which has led to some awkward confusion on his part about what exactly Christianity entails. 

However, he will have an opportunity to brush up at a prayer service he's hosting the day before his inauguration, and charging $100,000 or more for his supporters to attend, in what is being called a "pay-to-pray" event.

Why does this matter?

• Christians, including even some who voted for Trump, might not appreciate him making jokes about one of Christianity's holiest days.

• Jesus in particular had fairly strong feelings about mixing commerce and prayer.

• Christian or not, a president-elect should probably have something better to do on Christmas evening.