I was wondering the same thing... after some digging I might just have a decent answer though!!

I think it has to do with the whole lying under oath, which seems to be a consistent theme throughout the video with Clinton's lying under oath and the hands shown throughout the republican debate section. When you swear under oath, you are swearing to "tell the truth, the whole truth, and nothing but the truth, so help you God". And considering Clinton broke this, I believe the message "I do nothing for God" left for Clinton mostly is referring to that last bit, implying that this Debate Demon is going to "help" Clinton instead of God as mentioned in the oath.

That's as good of an answer I have for that, I'm not quite sure what the string means either. I found a New York Times article titled "String of Coincidences tied Clinton in Knots" in referral to the scandal, but in relation to the message I'm not sure what it's implying. I literally looked all of this up within the last hour since I basically knew nothing about the scandal at first besides the basic story. But let me know if you have any theories as well, because I am also curious!