'Mountains' in the Bible

And the waters prevailed exceedingly on the earth; and all the high mountains that are under all the heavens were covered.

Fifteen cubits upward the waters prevailed; and the mountains were covered.

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

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

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