In May 2024, Brand revealed that he had been baptised in the River Thames, during a ceremony held in Henley-on-Thames, Oxfordshire, so he could "leave the past behind".

The baptism occurred months after a Dispatches and Sunday Times investigation highlighted accusations by four women of rape, sexual assault and abuse at the height of Brand's fame between 2006 and 2013. Brand denies all allegations.

"I try and live in a way that I never judge and I always try and love - and that principle doesn't just apply to perfect people with perfect lives," Grylls said.

"He was a Running Wild guest; I'm friends with many of our Running Wild guests. And I always try to think of that phrase, "WWJD" - what would Jesus do? That's been a guiding principle for me."

Grylls continued: "I don't feel particularly 'churched' in a formal sort of religion, but I have a strong Christian faith that's been part of my life for many years.

"I say my prayers in the morning, say sorry, say thank you, say help. I've seen a lot of life. I've seen a lot of loss. I've seen a lot of difficult moments. And my faith has been a quiet strength and backbone through that."

The devout christian previously described being at Brand's baptism as a "privilege" after the comedian's "tough time".

"Faith and spiritual moments in our lives are really personal," he told The Daily Mail. "But it is a privilege to stand beside anyone when they express a humble need for forgiveness and strength from above."

"Friendships when we go through tough times are worth so much," he added.

In a previous Instagram video, Brand told his followers he felt "incredibly blessed" after his baptism in the River Thames. "I got baptised and it was an incredible, profound experience," he said. "I'm so grateful to be surrendered in Christ."