Isaac departed from Gerar, and began to dig again the wells of water which they had digged in the days of Abraham his father, and which the Philistines had stopped. His reverence for his father was so great that he even restored the names by which Abraham had called the wells. To reward him for his filial respect, the Lord left the name of Isaac unchanged, while his father and his son had to submit to new names.
After four attempts to secure water, Isaac was successful; he found the well of water that followed the Patriarchs. Abraham had obtained it after three diggings. Hence the name of the well, Beer-sheba, "the well of seven diggings," the same well that will supply water to Jerusalem and its environs in the Messianic time.