Esek is the name Isaac gave to a well in Genesis 26:20 after the herdsmen of Gerar quarreled with his herdsmen, claiming the water belonged to them. The name means 'contention' or 'strife,' commemorating the conflict over water rights. The well's location is unknown today, though it was somewhere in the Negev or northern Sinai. Greek translates the name as Adikia ('Injustice'), interpreting the incident as an unjust seizure. The naming of wells in Genesis often reflects the circumstances of their discovery—Esek stands as a reminder of hostility, contrasted later with Rehoboth ('Broad Places'), where Isaac finds peace.