'Mountains' in the Bible

And the waters prevailed exceedingly upon the earth; and all the high mountains that were under the whole heaven were covered.

Fifteen cubits upward did the waters prevail; and the mountains were covered.

And the ark rested in the seventh month, on the seventeenth day of the month, upon the mountains of Ararat.

And the waters decreased continually until the tenth month: in the tenth month, on the first day of the month, were the tops of the mountains seen.

And he said, Take now thy son, thine only son, whom thou lovest, even Isaac, and get thee into the land of Moriah. And offer him there for a burnt-offering upon one of the mountains which I will tell thee of.