John 4:14

διψήσει for διψήσῃ (correction to the usual construction: comp. John 6:42; John 10:5; Luke 10:19).

14. οὐ μὴ διψ. εἰς τ. αἰ. Strongest negation (John 4:48), will certainly not thirst for ever (see on John 8:51), for it is the nature of the living water to reproduce itself perpetually, so that the thirst is quenched as soon as it recurs. And this inexhaustible fount not only satisfies the possessor but refreshes others also (John 7:38).

εἰς ζωὴν αἰών. This is the immediate result; the soul in which the living water flows has eternal life: see on John 4:36 and John 3:16; John 3:34. Comp. John 6:27, where the living bread is said to abide εἰς ζωὴν αἰώνιον.