Why would an omnipotent being care what a pathetic, mortal, and violent group of hairless monkeys he/she/it made in Its image believed in It or not?
Either way, you construct a self-reference paradox. You say faith is necessary for "God's" plans for humanity, but this assumes that It wants or needs the love of mortal beings, which is ultimately not provable and therefore no more valid than worshipping narwhals because their magical horns will eventually grant immortality to all believers in their awesome powers.
In the end, faith in the otherworldly is but a vagary of perception- the temporary construct of a feeble human intellect trying desperately to justify an existence that is without meaning or purpose. And all as artificial as the sugary trash that is Kool-Aid, although only a human mind could invent something so contradictory to reality as the Bible. It is my personal belief that once people realize this, more stuff will be accomplished as time reserved for "team prayer" and "hoping hard enough for something to happen" are recognized as the thinly veiled exercises in futility that they really are.
Wow, you are so far off course I dont know where to start. So I wont