John Chrysostom
A source of living water, meaning that which flows upward from a spring beneath.
And they digged in the torrent, and found living water:
וַיַּחְפְּר֥וּ עַבְדֵֽי־יִצְחָ֖ק בַּנָּ֑חַל וַיִּ֨מְצְאוּ־שָׁ֔ם בְּאֵ֖ר מַ֥יִם חַיִּֽים׃
2 Church Fathers comment on this verse
A source of living water, meaning that which flows upward from a spring beneath.
The text states, "water." In this context, the term "stream" is used instead of "valley," since a source of living water is not typically found in a low area.
In this case, "living water" most likely refers to flowing water. It is noteworthy that both the Hebrew and Latin languages share similar idiomatic expressions: חַיַּים מַיִם and aqua viva.
Passages read together with this verse.