Whoever believes in me, as the Scripture has said,
streams of living water will flow from within him.
The promise given by the Lord about living water is one of the greatest promises in the Bible. First He said that if we would drink this living water we would never thirst. That in itself is really over the top. Jesus is describing utter and total satisfaction that only comes from the Lord. Nothing from His glorious creation could ever make that boast, total satisfaction. What is different about this living water? It is actually a reference to the Holy Spirit Who is not created at all. He is the glorious third person in the deity that makes the satisfying life of intimacy with God a reality. The second promise associated with living water is in today’s verse. The living water would flow out of our innermost being, that place of intimate fellowship, to minister to others. This is the second blessing of living water. Here is Andrew Murray’s description.
“Jesus said in his conversation with the Samaritan woman, “Everyone who drinks this water will be thirsty again, but whoever drinks the water I give him will never thirst”. In today’s text the promise is even greater: Rivers of living water will flow from his heart, bringing life and blessing to others. John says that this refers to the Holy Spirit who, while Christ lived, had not yet been poured out. Christ first had to be sacrificed to God by the eternal Spirit and, by virtue of the resurrection, be declared by the Holy Spirit as the Son of God. Then only would the Son of God receive power from the Father to pour out the Holy Spirit, for the children of God to be able to declare, “The Holy Spirit of Christ lives in me.” What does one need to be able to experience the promise of the streams of living water? Only one thing: an intimate clinging to Christ—an undivided submission to Him and the assurance that His Spirit will do the work within you that you yourself cannot do. You need a faith which trusts Him from day to day to let the living water flow from you.”
That is a great description of our Christian life. We drink this water, we are satisfied, and it flows out to meet the needs of others all around us. So are you thirsty today? Go ahead and have a drink, soon streams of living water will be flowing out from you.