Revelation 21:6 (NIV) "I am the alpha and the omega, the beginning and the end. To him who is thirsty I will give drink without cost from the spring of the water of life."
God is the first and the last, the beginning and the end as it says in this verse, He is everything in between, too! He, being everything and always being, has all that we need. He is the giver of life, all life flows from Him. Everything He does is life producing. He is the source from which life comes.
As long as we are alive we will be thirsty for water. Sadly, so many people do not drink enough water for their physical well being. Our bodies are mostly made up of water and so we need plenty of water flowing through us to nurture us as well as flush away the impurities that collect in us. Too many people try to replace their body's need for water with alternatives, such as sodas, juice, tea, coffee or other flavored liquids. None of these produce life enhancing effects nor satisfies the body's thirst like water! In spiritual things, people do the same type of thing. Our spirit man thirsts after the life enhancing effects that only God gives, yet, we try to quench that thirst with alternatives, none of which brings spiritual health and vitality to our spirit being. There's nothing to compare with a long cool drink of pure water from God's well!
The best offer in town is, it's offered to us without cost! God offers us water from His spring of life without charge. It is freely given to any who will receive it, however, it isn't free, someone has paid a price for it. Just as in today's economy, welfare, social security, food stamps, housing and other social assistance may be offered to people without charge, it isn't free, someone has paid for it and it wasn't the government. The government has no money to give, only the authority to take some from those who work and give to those who are in need, the working citizen of the United States of America has paid for it. The difference is that the working man gives up an average 30% of his income in taxes that are used to give to those in need. Jesus didn't give a percentage, He gave his life, He gave everything, He paid the greatest price of all that we may have living water! He bought THE gift that keeps on giving.
John 4:14 (NLT) "But those who drink the water I give will never be thirsty again. It becomes a fresh, bubbling spring within them, giving them eternal life."