“It was the last and most important day of the Feast. Jesus stood up and spoke in a loud voice. He said, "Let anyone who is thirsty come to me and drink. Does anyone believe in me? Then, just as Scripture says, streams of living water will flow from inside him." When he said this, he meant the Holy Spirit. Those who believed in Jesus would receive the Spirit later. Up to that time, the Spirit had not been given. This was because Jesus had not yet received glory.” (John 7:37-39)
But if we walk in the light, as he is in the light, we have fellowship with one another, and the blood of Jesus, his Son, purifies us from all sin. – 1 John 1:7
We cannot walk in the light without Jesus.
Jesus is the well of the living water, the Holy Spirit. 