3. Which is the most accurate of the four gospels, since each gives a contradictory account of events?
I don't find the bible contradictory so please cite the items you find contradictory.
4. Why do you believe Jesus was the son of God, or God himself - even though Jesus never, ever said anything like that?
Actually, He did:
The woman said, "I know that Messiah" (called Christ) "is coming. When he comes, he will explain everything to us." Then Jesus declared, "I who speak to you am he."
John 4:25-26
Simon Peter answered, "You are the Christ,] the Son of the living God." Jesus replied, "Blessed are you, Simon son of Jonah, for this was not revealed to you by man, but by my Father in heaven.
Matthew 16:16-17
But Jesus remained silent and gave no answer. Again the high priest asked him, "Are you the Christ, the Son of the Blessed One?" "I am," said Jesus. "And you will see the Son of Man sitting at the right hand of the Mighty One and coming on the clouds of heaven."Mark 14:61-62
They all asked, "Are you then the Son of God?" He replied, "You are right in saying I am."
Luke 22:70
"You are not yet fifty years old," the Jews said to him, "and you have seen Abraham!"
"I tell you the truth," Jesus answered, "before Abraham was born, I am!"
John 8:57-58
5. If the Bible is the word of God, why does it contradict itself and give various accounts of events?
I do not find the Bible contradictory. Please cite the events you consider contradictory.
6. If there is only one God, why is He a jealous God - what could He possible be jealous of?
There are many meanings for jealous. One is envy. When humans are jealous, it is from envy. We envy that other person for what they have and wish we had. Another definition for jealous is "vigilant in guarding something" and "Demanding exclusive loyalty or adherence." God is vigilant in guarding the worship and honor that belong to Him exclusively.
"You shall not make for yourself a carved image, or any likeness of anything that is in heaven above, or that is in the earth beneath, or that is in the water under the earth; you shall not bow down to them nor serve them. For I, the LORD your God, am a jealous God..."
Ezekiahl 20:4-5
7. Jesus's bloodline is traced back to King David - through Joseph, yet by your account Jesus was not the son of Joseph. Explain?
According to the experts in Jewish tradition, if a Jewish man adopted a son, that son now shares his lineage.
8. Jesus rose from the grave and lived amongst his disciples for 40 days before ascending, why isn't there any record outside the bible of the walking corpse of a notorius executed criminal?
Perhaps because the unbelievers were not visited personally by Jesus. Lots of stuff doesn't get into our history books because they're tabbed as conspiracy theories. Maybe...maybe not. Doesn't mean they can't have happened.