Tim Tebow drops by a Texas prison to surprise fellow devout Christian inmates and takes part in a push-up contest and poses for selfies after receiving a letter from a prisoner’s father

It’s not every day that a celebrity athlete responds to a jailhouse fan letter by showing up to meet the author in person, but Tim Tebow – one of nation’s most famous and outspoken Christian athletes – did just that last week.

After speaking at a pro-life Christian event in Waco, Texas on Thursday, the 32-year-old former NFL star-turned ESPN college football analyst took a detour to the Alfred D. Hughes high security prison unit in Gatesville, Texas.

The 2007 Heisman Trophy winner was honoring the request of an inmate’s father who wrote to the Tim Tebow Foundation asking its namesake to pay him and his son a visit.

Tebow’s charity worked with local prison ministry group Discipleship Unlimited and prison officials to arrange the meeting. The unnamed dad and his son reportedly had no idea Tebow was coming.