Patton Oswalt, a comedian and actor who is known for his atheist beliefs, recently mocked the Bible and compared it to works of fiction.

“Dear people citing The Bible,” Oswalt wrote on Twitter. “It’s a cool book with some wonderful passages but it also has ghost sex & giants & super babies & demons. It’s why we don’t make laws based on Game of Thrones, My Little Pony or Legend of Zelda.”

Oswalt, who has appeared in The Secret Life of Walter Mitty and Ratatouille, and currently plays Principal Durbin on NBC’s A.P. Bio, often brings up atheism in his stand-up comedy.

But this tweet didn’t leave users laughing, with the actor-comedian receiving pushback.

His tweet was referencing those quoting the Bible in the discussion over separating families at the border. But instead of the conversation staying on immigration, it became a debate over the Bible. More than 4,000 people commented, many Christian users defending the Bible and their beliefs.

Twitter user Yorton Clark wrote, “Most of all the laws we have are based from the Bible, murder, stealing, take care of your family and neighbors…It’s called moral law.”

Others clapped back at the comedian with sarcasm. Eric Teetsel, president of the Family Policy Alliance of Kansas wrote, “Ghost sex and super babies? Who taught Patton’s Sunday School class? Jack Black?”

Twitter user Casey Lawson wrote, “I used to be a Christian. That was before I read this brilliant Patton Oswalt tweet and subsequently renounced God. I never realized that the Bible is literally Twilight or that reciting the Lord’s Prayer is exactly the same thing as praying to Link.”

What are your thoughts on Oswalt’s tweet and the pushback? Share them in the comments.