Therefore, Congress approving of their public display does not favor any one particular religion
Which one do you display? Will the Jews have objection to Catholic doctrine being enshrined by their country? How about Protestants?
Did you do know that when the Bible was taught in public schools there was a riot and murders involving something as simple as which version to use? And that's just within Christianity.
Further, they contain precepts held forth by many other religions as well.
Good, then let the law allow all law-oriented religious texts. But you wouldn't want that fairness, would you?
The law already does allow all those other texts, and despite your ill-based assumption, I truly have no problem with that. Please don't blame me for the fact that a predominantly Christian society expresses no urge to place statues of Buddha in front of their courthouses.
What I do object to is "the Law" (aka 'Rogue Courts') discriminating only against Christianity, in all its forms and at every turn.
Then again, Jesus did predict that this would happen over 2,000 years ago, so while I object to it, it doesn't surprise me... any more than does your judgemental venom for my fair and honest observation.