'Wilderness' in the Bible

He said, I am the voice of one crying in the wilderness, Make straight the way of the Lord, as said the prophet Esaias.

And as Moses lifted up the serpent in the wilderness, even so must the Son of man be lifted up:

Your fathers did eat manna in the wilderness, and are dead.

Jesus therefore walked no more openly among the Jews; but went thence unto a country near to the wilderness, into a city called Ephraim, and there continued with his disciples.