Genesis 26:20

26:20 the herdsmen of Gerar quarreled with Isaac’s herdsmen, saying, “The water belongs to us!” So Isaac named the well Esek because they argued with him about it.

Genesis 26:22

26:22 Then he moved away from there and dug another well. They did not quarrel over it, so Isaac named it Rehoboth, saying, “For now the Lord has made room for us, and we will prosper in the land.”