1. Egyptians and adam/eve is a totally different time period according to the bible. Kinda surprising how you didn't mention any number of things wrong with adam/eve but ok.
2. What the fuck are you talking about? The bible was originally written in hebrew. Translations were merely for the sake of new languages such as french, german, etc. Every translation stems from the original text anyway. They didn't just "choose" a book to follow, there has always just been the bible.
3. Humans will always be humans. Just because some guy gets a religious education doesn't mean he's going to be different. Same shit with every religion really. Indulgences were a scam used by the catholics in the late medevil period, its non existent today.
4. Well according to christianity I believe their answer is that they died in the flood or something. Though this is old testament.
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Except #3 your entire points were towards the old testament, which is not what christianity is really about. They kind of accept the old testament but at the same time the whole being of christianity is in the new one.