Most people spend their lives spiritually parched. We wake up every day trying to find a sense of peace or a reason to hope, but we look for it in the wrong places. We treat our souls like a lawn in a mid-summer drought, trying to keep things green with a spray bottle of self-improvement. We worry that God’s grace is a limited resource, like a reservoir that might run dry if we ask for too much or fail too often. As a pastor who spends his life looking at the big, heavy truths of the Westminster Confession, I see this anxiety in the pews every Sunday. People are terrified that their sin is bigger than God’s mercy.

John Bunyan, the man who gave us “The Pilgrim’s Progress,” wrote a book in the final year of his life that acts like a dam breaking over a dry valley. In “The Water of Life,” he takes a single image from the book of Revelation—a river of water of life, clear as crystal—and uses it to explain that God’s grace is not a stingy drip. It is a majestic, overwhelming river. Bunyan isn’t interested in giving you “ten steps to a better you.” He wants to show you a God who is so full of life that He can’t help but let it overflow toward you. This book is a direct challenge to anyone who thinks they have finally managed to out-sin the reach of the Gospel.

A River of Grace That Makes Mountains Look Like Dust

One of the most impactful points Bunyan makes is about the sheer scale of God’s grace. We tend to measure our problems in tons and God’s help in ounces. When we look at the mess we’ve made of our lives, it feels like a mountain. Bunyan turns this around by showing us that if grace is a river proceeding from the throne of God, then our sins are like small pebbles in a massive current.

He argues that the “Spirit and grace of the gospel” is called a river specifically to answer our “mountainous doubts.” We fear there isn’t enough to quench our thirst or wash away our filth. But Bunyan points out that this river is deep, broad, and always rising. It doesn’t just cover our sins; it swallows them up. When you compare your sin to the infinite grace of God, the math changes. Your “huge” problem suddenly looks like an ant’s egg compared to the majesty of the Alps.

“I know there are many mountebanks in the world, and every of them pretend they have this water to sell; but my advice is, that thou go directly to the throne thyself… This is to give us some small illustration of the exceeding riches of his grace, which as far, for quantity, outstrips the biggest rivers, as the most mighty mountain doth the least ant’s egg or atom in the world.”

Grace Is a Matter of Justice, Not Just Kindness

As a Reformed pastor, I find Bunyan’s focus on the “source” of this river to be the most surprising part of the book. He notes that the river proceeds from the “throne of God and of the Lamb.” In our modern world, we often think of grace as God just “letting things slide” because He is nice. But Bunyan shows that grace is a throne-room matter. It is an act of authority and, more importantly, an act of justice.

Because the Lamb was sacrificed, the debt is paid. This means that when God gives you grace, He isn’t breaking His own laws; He is fulfilling them. Grace flows from the seat of justice. This gives the believer a “sound bottom” to stand on. You don’t have to worry that God will change His mind or realize He made a mistake in forgiving you. The river of grace is a “faithful fulfilling of promises” backed by the highest authority in the universe. It is a legal reality that provides a “satisfied though guilty” peace to the soul.

“Take man from this river, and nothing can make him live: let him have this water and nothing can make him die… All things that happen to thee are, for Christ’s sake, turned into grace.”

The Danger of Mixing Your Own Ingredients Into the Water

Bunyan is very protective of the “purity” of this water. He points out that the text says the river is “pure” and “clear as crystal.” In his day, as in ours, people were always trying to add something to the Gospel. They wanted to mix in a little bit of human merit, a little bit of “doing your best,” or a few “works of supererogation.”

Bunyan warns that any attempt to mix your own works with the grace of God makes the water poisonous. It must be taken “by itself.” The moment you add your own goodness to the mix, it is no longer the water of life; it becomes the muddy water of human invention. This purity is what makes the Gospel “clear.” You can see all the way to the bottom. There is no fraud or hidden catch. God isn’t trying to trick you. He offers the water freely to the poor and needy because only they are honest enough to admit they are dying of thirst.

“Only, if thou wouldst drink it, drink it by itself, and that thou mayest not be deceived by that which is counterfeit, know it is as it comes from the hand of our Lord, without mixture, pure and clear as crystal.”

You Are Either a Fish or a Frog in the River of Grace

Bunyan uses a vivid illustration about fish and frogs to explain how people relate to the church. He says the grace of God is like an element. A fish lives in water; it is its “only proper element.” If you take a fish out of the water, it dies. A Christian is like that fish—they cannot survive without a constant supply of the Spirit.

A frog, however, can live in the water, but it can also live on the land. Bunyan compares this to people who want a “pretty good shift” by using grace to remove their guilt while still living for their own lusts and the world. They “scrabble on” in a religious profession, but they aren’t truly of the river. If you confine them to grace alone, they loathe it and die. This takeaway is a sharp warning for us to check our own hearts. Do we love the river because we need it to breathe, or are we just using it as a temporary hiding spot before hopping back into the mud?

“The fish dieth if she be taken out of the water, unless she be timely put in again; the saint dieth if he be not in this river… they are fish, not frogs, that can live in the river, as in their only proper element.”

You should read “The Water of Life” because it will stop you from being a “talker of grace” and help you become a drinker of it. John Bunyan wrote this while he was literally standing on the bank of the “black river” of death, and he writes with a joy that is infectious. He shows that the Reformed faith is not a cold, dry system but a “heart-ravishing sight” of a God who pours out His own soul to save yours. If you are tired of “muddied” doctrines and “foul” opinions that leave you feeling empty, this book will point you back to the spring-head. It is a call to stop your “slavish fears” and simply drink and live forever.