Doesn't God know what you need at the moment? Before you ask? Even if you whisper? Even if it's silent? Even if it's in another language? Even if it's in Klingon?
Hey, my Klingon wedding ceremony needs a prayer, too. "tlhogh. tlhogh, maHvaD qem nuq nItebHa' … DaHjaj."
I know we should be thankful for the meeting's spiritual food, but isn't God capable of understanding that we are? Isn't his existence on a completely different time scale from our own? So, why do we need to pour our thoughts out in a monologue and require everyone else in the room to silently submit to it? Doesn't God know what's in their hearts too?
What if they're not thankful? Does God still require lip service and perfunctory silent submission to this big long prayer? Does he want it? Why would he want it?
What happens if you just break for it and start to leave? Does God come after you, or do the others in the congregation shame you? If it's the latter, isn't that all that happens? Then how is it the former? If it isn't the former, and it's only the latter, then what exactly is it that these people call God?
What is this prayer but a group ritual to reinforce ideas and feelings in the congregation? Indeed, what is the entire meeting but a group ritual and an exercise in cohesion?
But if this God is invisible, atemporal, omniscient, omnipresent, and omnipotent, then why do his people need such a group cohesion ritual to convince themselves of it?
If we do this ritual to work out what God did in the past and what he'll do in the future, why did this omniscient, omnipotent, omnipresent God allow such things to go this way in the Garden of Eden?
To quote Epicurus: "Is God willing to prevent evil, but not able? Then he is not omnipotent. Is he able, but not willing? Then he is malevolent. Is he both able and willing? Then whence cometh evil? Is he neither able nor willing? Then why call him God?"