What is it about the Constitutionally protected "freedom of assembly" you don't understand?
And then what possible, Constitutionally credible rationale informs the prohibition such assembly, which happens to be a gathering of Christians for a Bible study?
You sound like you've been bitch-slapped by the little plutocrats running your "home-owner's association" one too many times.
Think.
FReegards!
I am all for freedom, property rights, and the right to assemble, but in many cases things just are not as cut and dry as you or I would like them to be. The other people that live or own property in an area have rights too, and you have to constantly weigh the rights of everyone in a given situation.
Admittedly, in this particular case I don't see an issue (assuming the facts given in the article are correct) but that is not to say that all bible studies of any size, duration and frequency are allowed in private homes zoned residential without restriction.