Webster(i)
18 And Isaac digged again the wells of water which they had digged in the days of Abraham his father; for the Philistines had stopped them after the death of Abraham: and he called their names after the names by which his father had called them.
19 And Isaac's servants digged in the valley, and found there a well of springing water.
20 And the herdmen of Gerar contended with Isaac's herdmen, saying, The water is ours: and he called the name of the well Esek; because they strove with him.
21 And they digged another well, and contended for that also: and he called the name of it Sitnah.