In-ká-hai: How Sweet It Is! (eBook Edition)

(1 review)
Current Stock:
Adding to cart… The item has been added


This is the eBook version of In-ká-hai: How Sweet It Is! When you purchase this product, you have the option to download the Mobi, ePub and PDF versions.

  • Mobi: meant for Kindle devices
  • ePub: meant for iBooks, Google Books, Kobo and more
  • PDF: requires a PDF reader like Adobe Acrobat Reader to view


In-ká-hai: How Sweet It Is! is the true-life story of Pete and Leah Humphreys who spent 17 years working in the arid Chaco region of Paraguay. They were Bible teachers to the Manjúi. These tribal people had no knowledge of the Bible and were steeped in their traditional beliefs.

Despite being very careful to teach the Bible clearly, the Humphreys encountered problems. The Manjúi put on a veneer of Christianity but underneath, they clung to their animistic beliefs. They were mixing two belief systems together. What could Pete and Leah do? The Manjúis’ eventual trust in Jesus is an exciting story of front line ministry in action.

Learn what the Humphreys did to overcome the challenges and, more importantly, see how it is applicable to ordinary believers anywhere in the world today.


Includes a six-session study guide based on lessons drawn from the story:

  • The importance of credibility in sharing the gospel
  • What needs to be considered when sharing the gospel with the biblically illiterate
  • How a person who is not a gifted communicator can share the gospel
  • The question of those who say they are saved but don’t act like it
  • The problem of syncretism and how to address it

Appropriate for these audiences:

  • Personal reading and reflection
  • Small groups
  • Christian schools
  • Bible colleges & seminaries (pastoral, missions, evangelism)
  • Sunday school

"In-ká-hai" is part of the Ambassador Series. The Ambassador Series is a curriculum that equips believers with the mandate, message and method of sharing the good news of Jesus Christ. 


Read a preview of In-ká-hai.


[Click here for help using the coupons or downloading the ebooks.]


  • 5
    Seriously, the best illustration for Foundations teaching ever!

    Posted by Franz Martens on 10th Aug 2020

    This book had me hooked from the first page. I have been trying to convince other ministers the value of sharing the gospel foundationally instead of taking the John 3:16 shortcut for years and have received so much push-back. After reading this book and sharing it with others, I think it is starting to sink in. The argument couldn't be any clearer. The book is very well written, easy to read, and it kept me turning the pages until it was finished. I HIGHLY recommend that any serious students of the Bible, including pastors, missionaries, and anyone who takes the Great Commission seriously, should take 2 hours to read this.