Well, I'll give you some tips.
1. If you are discussing the Bible, make sure that you know what you are talking about, and be prepared for that Christian to say "out of context," because even though it might not be out of context, their stubborness will kick in due to the failure of accepting the fact that it is indeed in correct context. At that point, ask them how it's out of context. Right there, try to see yourself how it could be out of context. If you can't see it being out of context, just point out that the person is acting very stubborn. But be warned, breaking the shield of stubborness is very difficult. Attempt to change the subject, because you have already won the debate on that subject since they can't show you how it really is out of context. Unless it is.
2. When discussing the existance of God, make sure you know what Faith is. Because apparently to Christians, it's stronger than evidence and proof according to a supposed saying of Jesus in the bible. In other words, a word by definition meaning "trust", makes something true and it doesn't need evidence or proof. Ask them how "trusting" in something shows the existance of anything. The very word of "Faith" can only be brought down if you can show to the Christian how faith doesn't prove an existance of anything. It will be even harder to do that for closed minded people. Stubborness is key. If they show stubborness due to failure of understanding the very word of Faith and its definition, you have already won.
3. Attacking the Creation Story is actually very simple. Ask them how they know that Adam and Eve were the first human. If their answers are something like "Because the bible states it," ask them to prove it. Ask them how they know that the Eartth and the Universe were created in a week. They'll most likely not be able to prove it. And when they state something like "With my Faith in the bible, it must be right" then you have already won the debate, because they can't prove to you that the creation story happened.
1. If you are discussing the Bible, make sure that you know what you are talking about, and be prepared for that Christian to say "out of context," because even though it might not be out of context, their stubborness will kick in due to the failure of accepting the fact that it is indeed in correct context. At that point, ask them how it's out of context. Right there, try to see yourself how it could be out of context. If you can't see it being out of context, just point out that the person is acting very stubborn. But be warned, breaking the shield of stubborness is very difficult. Attempt to change the subject, because you have already won the debate on that subject since they can't show you how it really is out of context. Unless it is.
2. When discussing the existance of God, make sure you know what Faith is. Because apparently to Christians, it's stronger than evidence and proof according to a supposed saying of Jesus in the bible. In other words, a word by definition meaning "trust", makes something true and it doesn't need evidence or proof. Ask them how "trusting" in something shows the existance of anything. The very word of "Faith" can only be brought down if you can show to the Christian how faith doesn't prove an existance of anything. It will be even harder to do that for closed minded people. Stubborness is key. If they show stubborness due to failure of understanding the very word of Faith and its definition, you have already won.
3. Attacking the Creation Story is actually very simple. Ask them how they know that Adam and Eve were the first human. If their answers are something like "Because the bible states it," ask them to prove it. Ask them how they know that the Eartth and the Universe were created in a week. They'll most likely not be able to prove it. And when they state something like "With my Faith in the bible, it must be right" then you have already won the debate, because they can't prove to you that the creation story happened.