The Biblical passage you are referring to is John 4. I believe this chapter has two points. The first is an allegory describing the Holy Spirit of God that lives within each of us:

So he came to a town in Samaria called Sychar, near the plot of ground Jacob had given to his son Joseph. Jacob's well was there, and Jesus, tired as he was from the journey, sat down by the well. It was about the sixth hour.

When a Samaritan woman came to draw water, Jesus said to her, "Will you give me a drink?" (His disciples had gone into the town to buy food.)

The Samaritan woman said to him, "You are a Jew and I am a Samaritan woman. How can you ask me for a drink?" (For Jews do not associate with Samaritans.)

Jesus answered her, "If you knew the gift of God and who it is that asks you for a drink, you would have asked him and he would have given you living water."

"Sir," the woman said, "you have nothing to draw with and the well is deep. Where can you get this living water? Are you greater than our father Jacob, who gave us the well and drank from it himself, as did also his sons and his flocks and herds?"

Jesus answered, "Everyone who drinks this water will be thirsty again, but whoever drinks the water I give him will never thirst. Indeed, the water I give him will become in him a spring of water welling up to eternal life."

The second point speaks to the nature of true worship, that it is worship in spirit (the divine breath, inspiration), and in truth:

The woman said to him, "Sir, give me this water so that I won't get thirsty and have to keep coming here to draw water."

He told her, "Go, call your husband and come back."

"I have no husband," she replied.

Jesus said to her, "You are right when you say you have no husband. The fact is, you have had five husbands, and the man you now have is not your husband. What you have just said is quite true."

"Sir," the woman said, "I can see that you are a prophet. Our fathers worshiped on this mountain, but you Jews claim that the place where we must worship is in Jerusalem."

Jesus declared, "Believe me, woman, a time is coming when you will worship the Father neither on this mountain nor in Jerusalem. You Samaritans worship what you do not know; we worship what we do know, for salvation is from the Jews. Yet a time is coming and has now come when the true worshipers will worship the Father in spirit and truth, for they are the kind of worshipers the Father seeks. God is spirit, and his worshipers must worship in spirit and in truth."