I was speaking with an atheist friend about my faith today and at one point in the conversation, while I was explaining what the bible says about salvation, he asked me a question. The question was "why should I care about what the bible says" I said because its the word of God. He then said" how do I know"?"how do I know the Koran or Hindu scripture not the real word of God'. I tried to explain but I don't think he was convinced at all. My question is how do we know that the Bible is from God, i would like to have better answers for him next time we talk.