A Dimensional Shift The conversation between the Woman at the Well and Jesus is one of the most confrontational dialogues in the N.T., yet one of the most heart-searching, transformational incidents that showed the ability of God to see---really see---into the heart the crucial matters that others passed over.
Jesus's statement, The hour cometh, and now is, when the true worshippers shall worship the Father in spirit and truth, for the Father seeks such to worship Him, is the crux of Christian worship! This is the sine qua non of true religion, and the only thing that gets the Father's attention when He scans over the congregations of men.
Hindering Interference That which interferes with this purity of worship is the tendency of men to substitute spirit worship with externals: empty rituals, icons of wood, cathedrals and temples of stone, traditions of men, sacerdotal clothing, long prayers, ad nauseam. (Matthew 23:1-24:1) Even the Apostles were impressed by the buildings of the Temple.
So, to facilitate a transition, a New Covenant had to be implemented by God. And so there would be no mistaking the transition---although God has always desired truthfulness in the heart---the old trappings of the Old Covenant of Judaism had to be eliminated:
Behold , the days come, says the Lord, when I will make a new covenant with the house of Israel and with the house of Judah.
Not according to the covenant that I made with their fathers in the day when I took them by the hand to led them out of the land of Egypt...
For this is the covenant that I will make with the house of Israel after those days, says the Lord, I will put my laws in their mind, and write them in their hearts, and I will be to them a God, and they shall be to Me a people!
...For I will be merciful to their unrighteousness, and their sins and iniquities will I remember no more.
In that He said, A new covenant, He made the first old. Now that which decayeth and waxeth old is ready to vanish. (Hebrews 8:8-13)
Announcement So, in essence, this what Jesus is announcing to the Woman at the Well. Yes! Worship "in Spirit and in Truth" is the modus operandi of worship---and it is available now (now is), BUT the old Temple worship with all its external "bells and whistles" must not be allowed to get in the way, distract, substitute for the real thing. So all these Temples---in Samaria and in Jerusalem---that highlighted the mountain tops, must be destroyed. (the hour cometh)
If it weren't for the amazing, previous counseling session that opened her eyes---and heart---wide, this announcement of annihilation would have been overwhelming to her. But she was so satisfied with the living water that quenched her thirst for a full life, that she became jubilant, and ran with the Good News, and it rang out to her village...to the nation...to the world...to everyone who reads the Bible!
Continual Thread The idea of out with the old, and in with the new was a common thread throughout the ministry of Jesus. What Jesus announced to the Woman was not a quirk or off the cuff revelation:
Matthew 8:11-12 children cast out...Mark 12:1-12, Luke 20:9-19 destroy the evil husbandmen...Matthew 21:43 kingdom taken...Matthew 23:33-36, Luke 13:34-35 house left desolate...Luke 19:41-44 enemies cast a trench...Luke 21:24 led away captive...Luke 23:27-31 blessed are the barren...
John the Baptist also announced a coming destruction if true, spiritual worship was not returned to! (Luke 3:7-8)O Generation of vipers who has warned you to flee from the wrath to come? Bring forth therefore fruits worthy of repentance...Now also, the ax is laid at the root of the tree...And the people asked him, saying, What shall we do then...?
For all People In taking time to teach this "Samaritan", Jesus showed that the New Covenant in spirit and truth was open to all people groups. Jesus was their Messiah, as well as the Jew's Messiah! (John 4:42 "the Christ, the Savior of the world")
In a few short years, the words of Jesus would ring true: Samaria, Galilee, Judea with all their religious pageantry would be trampled on by the boots of the Roman Legions for 3 1/2 years, and leveled to the ground until totally destroyed. Neither this mountain nor Jerusalem remained. [For interesting comparative study, read Micah 1, where Samaria and Jerusalem are both linked together and destined for judgment! What is the transgression of Jacob? Is it not Samaria? And what are the high places of Judah? Are they not Jerusalem?]
But out of the ashes would arise a Church (comprised of Samaritan, Jew, et al.) worshipping God in spirit and in truth.