Believing with you that?

1)Does "Believing with you that" mean "Yes like you, I also believe that"?
2) Does "that he owes account to none other for his faith or his worship" mean "that Man should explain his faith or his worship"?
3) Does "the legitimate powers of government reach actions only, & not opinions" mean "the legal powers of government can only control people's actions only, & not control people's opinions"?

Background info:

In that letter, referencing the http://en.wikipedia.org/wiki/First_Amendment_to_the_United_States_Constitution, Jefferson writes:

Believing with you that religion is a matter which lies solely between Man& his God, that he owes account to none other for his faith or his worship, that the legitimate powers of government reach actions only, & not opinions, I contemplate with sovereign reverence that act of the whole American people which declared that their legislature should 'make no law respecting an establishment of religion, or prohibiting the free exercise thereof,' thus building a wall of separation between Church and State.^{http://en.wikipedia.org/wiki/Separation_of_church_and_state#cite_note-Jefferson11-15}