Living water is a reference to flowing water. Flowing water was considered superior to stagnant water and flowing water was required for the Jewish purification bath known as a Mikvah. Good information on the Mikvah can be found at
chabad.org/theJewishWoman/article_cdo/aid/1541/jewish/The-Mikvah.htm. Jews still use the Mikvah bath today.
Jews would go to a river or spring, stip naked and immerse themselves. They would open their mouth, hold their eyes open, spread their fingers and would go down into the water until their entire body was immersed and would thus be purified. When you hear God tell the israelites to “Purify yourselves” they are talking about a Mikvah purifiation bath. When the Bible says “Wash your garments” they are talking about taking off your clothes to wash them and immersing yourself in a Mikvah bath for purification.
At that time Jerusalem, all Judea, and the whole region around the Jordan were going out to him and were being baptized by him in the Jordan River as they acknowledged their sins. (Matthew 3:5-6)
John the Baptist was “Baptizing” people, immersing them in the living water of the Jordan River. People were confessing their sin and undergoing a Mikvah purification bath. Jesus himself undergoes a Mikvah at the hands of John the Baptist and raises it to supernatural status. Through his own baptism, Jesus raises the Mikvah bath to the status of a sacrament.
Jesus’ words “
streams of living water will flow from within them” would have been very provocative to those who heard him. When Jesus told the Samaritan woman that he would give her living water to drink, she would have understood it to be water which purifies. That is why she was so anxious and said, “
Give me this water always”.
***John answered them all, saying,l “I am baptizing you with water, but one mightier than I is coming. I am not worthy to loosen the thongs of his sandals. He will baptize you with the holy Spirit and fire.” ***(Luke 3:16)
This is key. Remember that John the Baptist is the last prophet. John the Baptist bridges the gap between the age of the revelation through the prophets and the age of revelation through God himself who became man. John is a bridge leading from the old covenant to the new covenant. And John links the Mikvah purification bath (I am baptizing you with water) of the old covenant to the sacraments of initiation, especially baptism and confirmation, where we are given the Holy Spirit.
The imagery of living water is used to describe our experience in heaven.
For the Lamb in the midst of the throne will be their shepherd,
and he will guide them to springs of living water;
and God will wipe away every tear from their eyes."
(Revelation 7:17)
-Tim-