Do we have a spirit and, if so, what role does it play in our relationship with God?

[muhammad_isa]

No judge follows that rule....... the good deeds does not veto the bad..

Wrong .. a judge will take previously good character into consideration for minor sins.
Major sins, such as murder or adultery, carry severe punishment regardless.

However, I think you'll find that a Catholic priest will seek repentance from their
subjects on death row. G-d forgives whomsoever He wills, and punishes whomsoever He wills.

What do you believe, what is the eternal fate for a sinner?

See above..

How many times do you have to sin to become a sinner? (I am pretty sure you can't do anything to lose the title of a sinner)

We are ALL sinners .. and even major sins can be forgiven with sincere repentance and not repeating the sin.