One Thing I Know — John Newton, a Blind Beggar, and the Only Testimony That Matters

Let me tell you about a wretched man. Those are his words, not mine.

He had spent years on the Atlantic in the slave trade, buying and selling men, women, and children into slavery. He knew exactly what he was. He never tried to dress it up. When he looked back on his own life, the word he reached for was wretch — and he meant it as plain description, not poetic flourish.

Then grace found him.

Years later, sitting down to write, he searched for words that could hold what had happened to him. He didn't reach for a theologian. He didn't reach for a poet.

He reached for a blind beggar in the Gospel of John.

One thing I know — whereas I was blind, now I see.

You know those words. You've sung them your entire life.

John Newton wrote them in 1772. He called the hymn "Faith's Review and Expectation." We call it Amazing Grace. And when the Museum of the Bible published Newton's own notes explaining the hymn, they recorded his words about grace in language that echoes the ninth chapter of John almost exactly — a man who could not explain why mercy had come to him, only that it had. The reason, he wrote, was unknown to him. But one thing he knew: whereas he was blind, now he could see.

Newton wasn't reaching for a metaphor. He was reaching for a testimony. And he found it in the mouth of a man who had said it first, eighteen centuries earlier, under considerably more pressure.

The story in John 9 is deceptively simple on its surface. Jesus heals a man who has been blind since birth. The man washes in the pool of Siloam. He sees. And then everything gets complicated.

The religious leaders are not confused about whether a miracle happened. The neighbors saw it. The man's parents confirmed it. What the leaders cannot accept is who did it — a man who healed on the Sabbath, a man they had already decided was a sinner, a man who threatened the categories they had built their world around.

So they call the healed man in for interrogation. Then a second interrogation. And they put it to him plainly: Give glory to God. We know this man is a sinner. What they want is a recantation. Admit Jesus is a fraud. Dismiss the healing. Come back inside the lines.

He won't do it.

Not because he has a fully developed Christology. Not because he can win the argument. He is not a trained theologian. He cannot out-debate the Pharisees on matters of Sabbath law or the criteria for identifying a sinner.

He just knows what happened to him.

Whether he is a sinner or not, I don't know. One thing I do know. I was blind but now I see.

That's his entire defense. Five words that have echoed across two thousand years of Christian testimony, borrowed by a slave trader turned pastor in eighteenth-century England, sung in every language on earth, and still — still — the most honest thing a person can say about what grace has done to their life.

It is worth pausing on what this man is actually doing in that interrogation room.

He is drawing a line between what he doesn't know and what he does know — and refusing to let what he doesn't know cancel out what he does know.

This is not intellectual laziness. It is not the retreat of a man who hasn't thought carefully enough. It is something more sophisticated than the arguments being thrown at him. He is saying: my uncertainty about your theological categories does not erase my certainty about my own experience. You can have the debate. I have the testimony.

There are people in every congregation, in every generation, carrying unanswered questions about Jesus. Real questions. Hard ones. Questions about suffering and silence and why God doesn't seem to show up when it matters most. Questions that keep them awake and make faith feel like a more fragile thing than they'd like it to be.

Those questions are not the enemy of faith.

What threatens faith is letting the questions erase the one thing you do know.

The man born blind could not answer the Pharisees. But he had something they could not take from him — a before and an after. A life that used to be one thing and is now something else entirely. That is not nothing. That is, in fact, the only testimony that has ever mattered.

John Newton understood this. He had his own before-and-after. A life he was not proud of. A grace he did not deserve. And when he reached for words to describe it, he found them in the mouth of a man who told the most powerful religious institution of his day: I can't answer your questions. But I know what happened to me.

Newton borrowed those words because they were his words too.

They might be yours.

But the story in John 9 doesn't end with the testimony. It ends with something quieter and more devastating.

The Pharisees throw the man out. He has been bold and defiant and uncooperative, and now he is expelled. The institution is done with him. He is alone again — not blind this time, but cast out, which is its own kind of darkness.

And then verse 35.

Jesus heard that they had thrown him out, and when he found him...

Jesus heard. Jesus went looking. Jesus found him.

This man did not go looking for Jesus either time. The first time, Jesus stopped beside the road while the disciples were busy asking theological questions about whose sin had caused the blindness. This time, Jesus heard what the institution had done and went looking for the one they had expelled.

That is not incidental detail. That is the whole gospel in one sentence.

Grace finds you. Grace heals you. And when the institution fails you — grace finds you again.

Amazing Grace is not a complicated song. It has survived two and a half centuries because it tells the truth about something simple.

There was a before. There is an after. And the distance between them has a name.

You don't have to have all the answers. You don't have to win the argument. You don't have to explain the theology to the satisfaction of people who have already made up their minds.

You just have to know the one thing.

I was blind. And now I see.

That's enough. It has always been enough.