Via NewsBusters:
Watching A Charlie Brown Christmas has been a tradition for millions since it first aired on December 9, 1965. While many love the iconic Vince Guaraldi score, the humor and the animation, one part of the special has always stood out and made it unique: Linus’s recitation of the Gospel of Luke.
In 2015, The Washington Post published a retrospective on A Charlie Brown Christmas. Michael Cavna explained Peanuts creator Charles Schulz’s mission in making the special:
Charles Schulz insisted on one core purpose: A Charlie Brown Christmas had to be about something. Namely, the true meaning of Christmas. Otherwise, Schulz said, “Why bother doing it?”
To Coca-Cola’s credit, Mendelson says, the corporate sponsor never balked at the idea of including New Testament passages. The result — Linus’s reading from the Book of Luke about the meaning of the season — became “the most magical two minutes in all of TV animation,” the producer says.
Schulz stood strong, despite efforts to talk him out of quoting from the Bible. On December 5, 2005, USA Today recounted:
[Executive producer Lee] Mendelson and animator Bill Melendez fretted about the insistence by Peanuts creator Charles Schulz that his first-ever TV spinoff end with a reading of the Christmas story from the Gospel of Luke by a lisping little boy named Linus.
“We told Schulz, ‘Look, you can’t read from the Bible on network television,’ ” Mendelson says. “When we finished the show and watched it, Melendez and I looked at each other and I said, ‘We’ve ruined Charlie Brown.’ ”
According to a recounting on MentalFloss.com, CBS executives told Schulz: “You can’t read from the Bible on network television.”