Check out this video of Mike Johnson taking his teenage daughter to a purity ball, where she signs a pledge to him not to have sex until marriage

• House Speaker Mike Johnson took his daughter, Hannah, to a purity ball when she was a teenager.
• Hannah made a virginity pledge to her father during the ball.

When it comes to parenting, Louisana's Mike Johnson is all about abstinence.

The House speaker once took his daughter Hannah to a purity ball, according to a 2015 news segment from the German television outlet n-tv. The segment was featured in a report from ABC News on Wednesday.

Purity balls are formal dance events attended by fathers and their daughters. The ceremony is popular among conservative Christians. During the event, daughters often make pledges to abstain from sex until marriage.

In the video, Johnson's daughter was seen making the pledge to him, where she said she was committing "to a lifetime of purity, including sexual purity."

Johnson's parenting style and relationship with his children have been the subject of speculation since he was elected speaker.

Last month, a social media user unearthed old footage of Johnson hawking an app that would alert him and his son if either of them looked at pornography.

"I'm proud to tell you my son's got a clean slate," Johnson said in the video.

Representatives for Johnson did not immediately respond to a request for comment from Business Insider sent outside regular business hours.