Elijah the prophet during the time when man did what is right in his own eyes

No wonder Elijah thought himself alone. Gilead was part of  the tribe that was in the northern kingdom of Israel. During that time Ahab sinned as if it was a light thing for him to do. In his time Hiel rebuilt Jericho (Joshua in 6:26 curses the man who rebuilds the city). During the time then there would have seemed like there was a famine of the word of God.