Genesis 21:33 And Abraham planted a grove in Beersheba, and called there on the name of the LORD, the everlasting God.
Beer-Sheba was at the Southern edge of the Promised Land. The Bible makes reference at least eight times to the land from “Dan even to Beersheba” in reference to the Promised Land.
Beer-Sheba, Beersheba, Beersheva, Be’er-sheva……. all refer to the same Israeli city on the Negev Desert in Southern Israel.
The name Beer-Sheba comes from the two Hebrew words, “Be’er” meaning well, as in a water well, and “Sheva” meaning oath or covenant. The name Be’er-sheva means the well of the oath. At Be’er-sheva Abraham made a covenant with King Abimelech regarding the well that he (Abraham) had dug (Gen. 21:22-32)
“Abraham planted a grove (tree) in Be’er-Sheva.” – Gen. 21:33 The word “grove” or tree comes from the Hebrew word êshel meaning tamarisk tree.
The tamarisk tree is also known as a salt cedar. The tree extracts salt from the ground and deposits the salt on its needles. During the coolness of night the salt attracts moisture which evaporates during the heat of the day. The tamarisk tree provides shade and coolness from the intense heat of the desert.
Abraham planted a tamarisk (êshel) tree at Beersheva. Our Jewish interpreter at Abraham’s Well told us that the Hebrew word “êshel” can be used as an acronym for three separate Hebrew words meaning eating, drinking, and sleeping. Perhaps this hints at Abraham’s hospitality as recorded in Genesis chapter 18 when he entertained strangers.
Gen 18:4,5 “Let a little water, I pray you, be fetched, and wash your feet, and rest yourselves under the tree: 5 And I will fetch a morsel of bread, and comfort ye your hearts; after that ye shall pass on:”
Approximately 25 years after God came to Abraham in the Ur of the Chaldees, Abraham was finally in the Promised Land with Issac, the son of promise. At Beersheba Abraham planted a tree and “called on the name of the Lord, the everlasting God.” – Gen. 21:33
In planting the tree at Beersheba Abraham was looking to the future. The tree was not just for him, but for those that would come after him. The tree signified that this place belonged to Abraham. Beersheba was Abraham’s undisputed property.
Tel Be’er Sheva
Tel Be’er Sheva is an archeological site about 2 1/2 miles from the city of Beersheva, the capitol city of Israel’s Negev region. The ruins at Tel Be’er Sheva date back to Bible times.
A well at Tel Be’er Sheva. 
Ruins at Tel Be’er Sheva archeological site.
The Battle of Beersheva, October 31, 1917. The Australia and New Zealand Army Corps (ANZAC), led by British General Edmund Allenby, mounted an offense against Ottoman defenses at Beersheva. The ANZAC troops pulled off a mounted infantry charge against the Ottoman defenders at Beersheva with only their bayonets in hand. The Ottomans were defeated by the ANZAC Light Horse Brigade. The strategic water wells at Beersheva were taken intact. Six weeks later, on Dec. 9, 1917, the Ottoman troops surrendered the city of Jerusalem to Allied forces.
Interestingly on the same date, Oct. 31, 1917, the British War Cabinet approved the text for what would become the Balfour Declaration that paved the way for the establishment of the modern state of Israel in 1948.
Beersheva War cemetery 
ANZAC Light Horse Brigade Memorial, Beersheva, Israel.
