In-ka-hai: How Sweet It Is!

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Also available in eBook format.


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.

Read sample chapters

No. of pages: 160
ISBN: 9781927429150  

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.


  • 5
    Wow!!! What a Story

    Posted by Steve MacIntyre on 19th Apr 2015

    I read this book while taking a short holiday in the mountains. It was amazing to read of the love and care that was taken to share a message that would truly be understood by the local people. After all their work, to see that the understanding was not there and to begin again must have been devastating to them. When, after presenting their message for the second time, ensuring that each concept was understood, they reported on the movement of the people to faith I cried. What an effort, but what a result. My wish is that others would read this life-changing story; then take up the challenge to share God's Word in the same simple, direct method in their own communities.