'In the Wilderness' in the Bible

For this is the person spoken of by Isaiah the prophet, saying, "The voice of one crying aloud in the wilderness, Prepare the way of the Lord, make his paths strait."

And his disciples said unto him, Whence can we in the wilderness have loaves enough to satisfy the cravings of so great a multitude?

Therefore if they say to you, He is in the wilderness; go not out: lo! he is in the secret closets; believe it not.