'Lower' in the Bible

and in the valley, Beth-haram and Beth-nimrah and Succoth and Zaphon, the rest of the kingdom of Sihon king of Heshbon, with the Jordan as a border, as far as the lower end of the Sea of Chinnereth beyond the Jordan to the east.

Their south border was from the lower end of the Salt Sea, from the bay that turns to the south.

She replied, “Give me a blessing. Since you have given me land in the Negev, give me the springs of water also.” So he gave her the upper and lower springs.

It then descended westward to the border of the Japhletites as far as the border of lower Beth-horon, then to Gezer, and ended at the Mediterranean Sea.

From there the border went toward Luz, to the southern slope of Luz (that is, Bethel); it then went down by Ataroth-addar, over the hill south of Lower Beth-horon.