Jesus tells the crowd the same thing He had told the Samaritan woman at the well. There is water which we can drink and never be thirsty again. This water is the living water which is the Holy Spirit, the third person of the Trinity. The One that takes up His abode in us, so that we are always being filled and refilled, so that we could never be thirsty. Just as the woman at the well had accepted this message, so did some of the crowd here in Jerusalem. They said “this man surely is the prophet”. But others said He can’t be, the Messiah will not come from Galilee. There will always be people who refuse to believe regardless of the signs or the situation. But, instead of being puzzled as to why they don’t believe, we should remember our own history before we accepted Jesus as our Savior and Lord.
3 For we ourselves were also once foolish, disobedient, deceived, serving various lusts and pleasures, living in malice and envy, hateful and hating one another. 4 But when the kindness and the love of God our Savior toward man appeared, 5 not by works of righteousness which we have done, but according to His mercy He saved us, through the washing of regeneration and renewing of the Holy Spirit—Titus ​3​:3-5 (NLT)
Because we have been redeemed by God’s grace and mercy, we should remember to always be thankful and pray that others will accept this free gift of God’s mercy and grace. That is the work that God has given us to do as laborers in His harvest.