Read Mathew 4:1-11, particularly focusing on verse 10, that should answer your question (via the Greek philosopher Socrates from 500 years BC), at least to anyone with any ability to think on their own that written word would answer the question of who wrote what, unless perhaps satan is so self loathing that he would cast himself as being such a loser, which he in fact is.
Your last question is just more splitting of hairs and I'll add that your Ockham's Razor could use a bit of sharpening!!
Occam's Razor would demand that the God hypothesis be discarded, in the face of evidence that everything in the universe is explainable without a God.
"Pluralitas non est ponenda sine neccesitate''
You demonstrate by argument and personification the written Word; (Mat 23:24); "Ye blind guides, which strain at a gnat and swallow a camel."
Over and out, roger that??
I forgot, the old "wise-sounding archaically written bible quote defeats any argument". Blast, my plans are foiled by a 2,000 year old religious text yet again!
ps; Your arrogant demands for answers to old philosophical questions aren't going to get you anywhere, to approach the Lord one must humble one's self. If you want answers to those questions before you seek the Lord, then I suggest you can read the writings of Lao Tsu who more than likely predates Socrates or read 'the art of peace' (the religion that is not a religion) which is fairly recent, another recent book is "Christ the eternal Tao" which also might relieve some of your apparent angst.
Your words are empty and your accusations hollow. You will resonate with those who already see the world through your narrow lens, that all unbelievers are arrogant, that we who doubt the word of one religious text among many are fools. You're right though, my demands will get me no where with someone such as you, who is not concerned with an honest investigation for the truth.
You already "know" the truth. You've "seen the light". You're so sure of yourself that anyone doubting you must be deluded. You and 6+ billion others as well. The fact that your "truths" differ doesn't concern you in the least bit; all the others are wrong and you're right, because you're you.
When someone actually honestly decides to investigate your holy book you can't take it. You keep telling them to go back and read it, because you believe that if anyone has actually read it they will convert. You cannot comprehend the idea that someone might be out there who can read the Bible with an open mind and still not be convinced. The sad part is that you're capable of understanding why people disagree with you, but you refuse to try.
My philosophical questions are not erudite, lofty, ivory tower trivialities, "gnats" to be strained against. They are serious questions about the implications of the existence of God. And because they force you to think, that perhaps the idea of God doesn't make as much sense as you thought, you will dismiss them out of hand. And yet you are the one who calls me arrogant. I am someone who does not claim to know the truth, who does not know whether or not there is a God, someone who is open-minded enough to read about more than one religion, and I am arrogant because of it.
And of course, you are humble. You, who are so confidently assured that you are right that you refuse to listen to criticism, to question your own beliefs and entertain the notion that another person may be right and you might be wrong, are humbler than me. If a Hindu or a Muslim was having this conversation with you do you think that they would see you as humble? There is a certain biblical quote that comes to mind,
Do not judge, or you too will be judged. For in the same way you judge others, you will be judged, and with the measure you use, it will be measured to you. Why do you look at the speck of sawdust in your brother's eye and pay no attention to the plank in your own eye? How can you say to your brother, "Let me take the speck out of your eye," when all the time there is a plank in your own eye? You hypocrite, first take the plank out of your own eye, and then you will see clearly to remove the speck from your brother's eye.