'In The Desert' in the Bible

For this is the man who was spoken of by Isaiah the prophet, who said, [Isa. 40:3], "[It is] the voice of a man who speaks out in the desert, [urging people to] make the road for the Lord ready [for Him to travel]; to make a straight pathway for Him [to walk on]."

Therefore, if people say to you, 'Look, he [i.e., Christ. See verse 23] is in the desert,' do not go out there. [Or if they say], 'Look, he is in an inside room,' do not believe him.