'Wilderness' in the Bible

In those days, John the Baptizer came, preaching in the wilderness of Judea, saying,

For this is he who was spoken of by Isaiah the prophet, saying, "The voice of one crying in the wilderness, make ready the way of the Lord. Make his paths straight."

Then Jesus was led up by the Spirit into the wilderness to be tempted by the devil.

As these went their way, Jesus began to say to the multitudes concerning John, "What did you go out into the wilderness to see? A reed shaken by the wind?

If therefore they tell you, 'Behold, he is in the wilderness,' don't go out; 'Behold, he is in the inner rooms,' don't believe it.