If we think about Christmas in space, the first thing that immediately pops into many minds is the Apollo 8 mission and its Christmas message from the lunar orbit. ...three astronauts, Frank Borman, Jim Lovell, and Bill Anders, read the first ten verses of Genesis from the Bible.
On December 24, 1968, people on Earth who were preparing for the Christmas festivities could experience a breathtaking historical moment. Those three American astronauts who were the first human beings traveling to the Moon were in lunar orbit during their Christmas Eve broadcasting.
Borman, Lovell, and Anders read ten verses from Genesis while people who were watching the broadcast (roughly a billion people from 64 countries) could see the black-and-white image of the Earthrise.
As Jim Lovell explained in 2013, the idea of reading from Genesis came from his wife, as she said:
“Recite the first ten verses of Genesis, which is the foundation of most of the world’s religions.” And they did.
https://medium.com/pod-astra/how-do-astronauts-celebrate-christmas-in-space-c40109bd03d1Why not read something from the New Testament about Jesus, since, you know, Christmas is about Jesus? (And because Jesus is also a foundational prophet of both Christianity and Islam, the world's two largest religions.)
Because space travel is all about Yahwehism, of course, and reading from the Oldest Testament was the perfect homage to him.