Skip to content ↓

Why Did God Create the Tree of the Knowledge of Good and Evil?

Why did God keep back just one thing from the people he made? Why would he make people in his image, then give them one prohibition? What was the purpose in that tricky Tree of the Knowledge of Good and Evil? Sinclair Ferguson addresses this in The Whole Christ.

I am giving you everything in this garden. Go and enjoy yourselves. But just before you head off, I have given you all of this because I love you. I want you to grow and develop in your understanding and in your love for me. So this is the plan:

There is a tree here, “The Tree of the Knowledge of Good and Evil.” Don’t eat its fruit.

I know—you want to know why, don’t you?

Well, I have made you as my image. I have given you instincts to enjoy what I enjoy. So in one sense you naturally do what pleases me and simultaneously gives you pleasure too.

But I want you to grow in trusting and loving me just for myself, because I am who I am.

You can only really do that if you are willing to obey me, not because you are wired to, but because you want to show me that you trust and love me.

If you do that you will find that you grow stronger and that your love for me deepens.

Trust me, I know.

That’s why I have put that tree there. I so want you to be blessed that I am commanding you to eat and enjoy the fruit of all these trees. That’s a command! But I have another command. What I want you to do is one simple thing: don’t eat the fruit of that one tree.

I am not asking you to do that because the tree is ugly—actually it is just as attractive as the other trees. I don’t create ugly, ever! You won’t be able to look at the fruit and think, That must taste horrible. It is a fine-looking tree. So it’s simple. Trust me, obey me, and love me because of who I am and because you are enjoying what I have given to you. Trust me, obey me, and you will grow.


  • Zero Gravity

    Zero Gravity

    While making a long journey across the world and enduring the fatigue that comes with it, I thought it would be nice to enjoy some light reading along the way. I mean it as no pun when I say Zero Gravity proved to be just the thing. 

  • A La Carte Friday 2

    A La Carte (October 3)

    A La Carte: Conrad Mbewe and Voddie Baucham / Piper on the evil that stuns heaven / Paths we did not choose / The hollow comfort of AI / The nuance of healing / Made for approval / and more.

  • A La Carte Thursday 1

    A La Carte (October 2)

    A La Carte: Tyler Robinson and the violence of porn / MacArthur, Sproul, Kirk, and the Queen / Conspiracy theories / The laughing revival / Let kids read dangerous stories / Why are Christians hung up on sex? / So many Kindle deals.

  • Worship a Number

    When I Worship a Number

    I am a long way from retirement—from pulling back from the full-time day-to-day responsibilities of my vocation to instead begin winding down and preparing to step away. I am a long way from retirement, but not so far away that I can neglect planning for it. So, like most of my peers …

  • A La Carte Collection cover image

    A La Carte (October 1)

    A La Carte: A banner day for Kindle deals / One of my biggest fears / Ways to pray for the lost / Body image and women’s discipleship / Birth stories you didn’t expect / Human-chimp similarity / and more.

  • 16 New and Notable Christian Books for September 2025

    September is fading into October, but before the month becomes a distant memory, I’d like to tell you about some of the new books that it brought our way. Here are 16 new and notable titles that I hope will be of interest to you. In each case, I’ve included the publisher’s description. Someone to…