No, I don't believe it's tantamount to forcing the entire population to worship under a state religion. What I believe is that if it passes, there will almost immediately be a lawsuit filed to have it overturned. Do you think it's free to the state to fight lawsuits? I'd bet on the lawsuit, and I'd bet that the lawsuit is successful. In other words, passing this bill would be about as smart as investing the same time and money into a perpetual motion machine. You're arguing that "well, it doesn't cost a lot" without realizing that 100% of the costs are guaranteed to result in additional costs & that 100% of the investment will be lost.
edit: I take it back. It won't be a 100% loss of investment. It's investing the taxpayer's money for reelection. "Hey ya'll, we all tried to make the Holy Bible the official book, but those heathens, the ACLU, sued our state and made us lose a lot of money. I'm with ya'll, so reelect me."