The disciples did not understand as they were zeroed in on natural things and not things of the spirit. Later they remembered what Jesus had taught and the things written of Him in the Scriptures. Their hearts burned within them as they encountered the Living Christ.
Isaiah 44:3 For I will pour water upon him that is thirsty, and floods upon the dry ground: I will pour my spirit upon thy seed, and my blessing upon your offspring:
The Samaritan woman could not receive “Living Water” from the physical well, she needed an encounter with Jesus. Then revival broke out from her testimony.
1 John 5:6-8 This is he that came by water and blood, even Jesus Christ; not by water only, but by water and blood. And it is the Spirit that bear witness, because the Spirit is truth. For there are three that bear record in heaven, the Father, the Word, and the Holy Ghost: and these three are one. And there are three that bear witness in earth, the spirit, and the water, and the blood: and these three agree in one.