John 4:13-14

Jesus explained that He was not really speaking about literal water but a spiritual source of refreshment and fulfillment that satisfied completely. To provide such water Jesus would indeed have to be greater than Jacob. Jesus described this water as welling up within the individual. Clearly He was referring to the Holy Spirit who provides eternal life (cf. John 7:38-39). As in His conversation with Nicodemus (John 3:5), Jesus again alluded to the Old Testament passages that promised salvation as satisfying water (e.g., Isaiah 12:3; Isaiah 44:3; Isaiah 49:10; Isaiah 55:1-7; Jeremiah 31:29-34; Ezekiel 36:25-27; Joel 2:28-32). The water that Jesus promised provided satisfaction without hard work in contrast to the literal water that the woman had to draw out of the well.