I think that one of the most difficult things for a Christian to do is know how to pray. Even the Apostles, who had witnessed the most astounding miracles -- the blind who could see; the lame who could walk; the dead who rose to life -- didn't ask Jesus to teach them how to do greater miracles. They asked Him to teach them how to pray, which tells me it was a struggle for them, too. I think that after spending nearly three years with Him, they had discerned that Jesus's private prayer life…