Reading this blog post from a Catholic blogger who shed some light on the ancient history and purpose of genuflection.
While striking his pose, Tebow is praying, and I don’t believe any person objects to that. But what is clear is his use of an ancient Catholic practice—genuflection, which is done before Christ in the Eucharist—and only then. For a religion that has no history, no scriptures other than the expropriated scriptures of the Catholic Church, and no sense of sacred and profane, the barrowing of the gesture becomes fair game.
I don't think the author would have any reason to know much about when Evangelicals do genuflect or if genuflection is even what they'd call it. I'd imagine Tim Tebow is just "taking a knee" and praying like we did in my public high school before a game. But is there any circumstances where an Evangelical Christian would have reason genuflect or is this just a quick aspiration to the Holy Spirit?
In other words, what is he doing and why is he doing it?