1. What evidence would prove to you that there was a global flood?
2. Does the account of the tower of Babel state that all languages came into the world at the same instant? (no it does not...and what is your evidence for the evolution of language at all?)
3. Does incest, if it ocurred, refute that Scripture contains accurate eyewitness account? (no.)
4. Mark and Matthew both give the same account of Jesus's journey out of the vicinity of Tyre, through Sidon, down to the Sea of Galilee and into the region of Decapolis (Mark 7 and Matthew 15). Do you have evidence that Jesus did not take this journey as written? How does this route demonstrate that Mark manages to mislocate some important sites in Palestine?
"1. What evidence would prove to you that there was a global flood?"
Physical evidence of flooding occuring 5-6kyears ago that affected the entire world, including such things as massive salting of plains, becoming more and more prevalent as one gets closer to an ocean shore, as well as all large lakes being salt as opposed to fresh water. (Among other things, we STILL would not be able to grow crops anywhere near a coastline, as the fields would still be contaminated with salt.) Since these conditions do not obtain, the evidence is thus lacking.
"2. Does the account of the tower of Babel state that all languages came into the world at the same instant?"
Before Babel: everyone spoke one language.
After Babel: everyone spoke different languages.
Yeah, that's what it says.
"(no it does not..."
Bzzt. Already refuted, see above.
"and what is your evidence for the evolution of language at all?)"
There's a whole section on this topic at any decent university library. Educate yourself.