Ruling on eating pork in Christianity as per Bible? Welcome to C.SE. This would be a great comment to the answer that suggests that Acts 10 doesn't declare all food clean (I tend to agree with your argument), but you don't actually answer the original question of can you eat pork. When you get a chance, check out the FAQ for what makes a good answer: christianity.stackexchange.com/faq
Is any reason given for God choosing Abraham? I'd prefer answers from the bible, but will accept Jewish or a Christian's churches teaching. The answer may also be that nobody knows.