'Feet' in the Bible

“What do you see?” he asked me.“I see a flying scroll,” I replied, “30 feet long and 15 feet wide.”

On that day His feet will stand on the Mount of Olives, which faces Jerusalem on the east. The Mount of Olives will be split in half from east to west, forming a huge valley, so that half the mountain will move to the north and half to the south.

This will be the plague the Lord strikes all the peoples with, who have warred against Jerusalem: their flesh will rot while they stand on their feet, their eyes will rot in their sockets, and their tongues will rot in their mouths.