Regardless of how the state uses religion, religion is still used to control you. Christianity has a pretty complex list of things that one must do or must not do in order to find salvation. "Thou shalt not kill" is not a suggestion, it is a law. Now, admittedly, the 10 Commandments are pretty decent and civilized laws, except for the whole "no other gods before me" thing, and the "lord's name in vain" bullshit. Okay, so like maybe 5 out of 10 are good laws.
Additionally, if you are a Christian, you are expected to attend worship services on a regular basis - if you don't, you're somehow less Christian - the bible not only tells you what to believe, but how to believe. There is a priest/minister who is "in charge" of the congregation. This guy is further subject to a whole heirarchy of jackasses - in the case of Catholicism, this goes all the way to the pope, a guy who has special powers to talk to Jesus directly. Thus, being a Christian implies aligning yourself within this heirarchy. This heirarchy is ALWAYS pyramidal, with the normal people at the bottom and the powerful at the top. By kneeling down to pray, you pass your freedom and responsibility not only to god, but to some rich powerful Italian as well.
If neither of these qualify as examples of any reasonable definition of control, let me know, and I will gladly take it back.