'Middle' in the Bible

Now, if you are ready at this very moment to obey "the sound of the trumpet, the flute, the lyre, the four-stringed lyre, and the harp,' and worship the image that I have made" If you do not so worship, you will immediately have cast yourselves into the middle of the blazing fire, and what god is there who can deliver you from my power?"

"Look!" he told them, "I see four men walking untied and unharmed in the middle of the fire, and the appearance of the fourth resembles a divine being."

This is what I saw in the visions of my head while I was in bed: I was looking and listen carefully! I saw a tree in the middle of the earth, the height of which was very great.