'Middle' in the Bible

Sihon king of the Amorites, who dwelt in Heshbon, and ruled from Aroer, which is on the edge of the valley of the Arnon, and the city that is in the middle of the valley, and half Gilead, even unto the river Jabbok, the border of the children of Ammon;

from Aroer, that is on the edge of the valley of the Arnon, and the city that is in the middle of the valley, and all the plain of Medeba unto Dibon;

And their border was from Aroer, that is on the edge of the valley of the Arnon, and the city that is in the middle of the valley, and all the plain by Medeba;