Available in Kindle and paperback editions
A Christian book for spiritual renewal
When the Heart Grows Cold
Awakening from Spiritual Dullness, Obeying the Light You Have, and Growing Again in Christ
Has the Word of God become familiar to you without changing you as it once did?
This serious but hopeful pastoral book is written for believers who continue reading Scripture, hearing sermons, praying, taking part in church life, and speaking Christian language, yet are concerned that they have become less willing to receive correction, confess sin, obey what God has made clear, and seek Christ as earnestly as they once did.
- Built around Hebrews 5:11-14
- Written by Justus Musinguzi
- Published July 2026
Amazon displays current pricing, delivery information, and format availability. Readers in Kampala and surrounding areas may also ask about ordering a hard copy through WhatsApp.
The concern behind the book
Spiritual decline is not always loud
A believer may continue hearing sermons, reading the Bible, joining Christian conversation, and taking part in church life while becoming less willing to believe and obey what God says. A warning is heard but not taken seriously. Sin is exposed but excused instead of confessed. A command is understood but obedience is postponed. Promises are known, but they are no longer received with the same trust and gratitude.
When the Heart Grows Cold addresses this danger. We may still hear Christian teaching and take part in church life, but the real question is whether we receive God’s Word with faith, repentance, worship, and obedience.
God’s Word has not lost its power. The danger is that the hearer becomes less willing to confess the sin Scripture exposes, believe its promises, obey its commands, and receive its comfort.
A careful distinction
What spiritual dullness means - and what it does not mean
A season of grief, illness, exhaustion, difficulty concentrating in prayer, or struggle to understand Scripture is not by itself evidence of a cold heart.
Spiritual dullness may appear when
- Scripture corrects us, but we defend ourselves rather than repent.
- We keep asking for more guidance while delaying a duty God has already made plain.
- Prayer, worship, and Bible reading are repeatedly postponed without serious concern.
- We become accustomed to making excuses for sin instead of confessing it.
- Christian knowledge increases, but obedience, discernment, and love for Christ do not grow with it.
Spiritual struggle is not automatically dullness
- A grieving believer may pray with few words while still clinging to Christ.
- An exhausted Christian may find Scripture difficult to take in while still longing for God’s help.
- A person may battle doubt, temptation, or fear and still bring that struggle honestly before God.
- A believer who is weary, grieving, or struggling but still seeks Christ should not be confused with someone who repeatedly refuses correction.
- The book helps readers examine themselves without treating every season of sorrow, illness, or exhaustion as spiritual dullness.
Hebrews 5:11-14
The warning and hope at the heart of the book
Hebrews describes hearers who had become “dull of hearing.” The passage does not rebuke them for failing to reach sinless perfection. It rebukes continued immaturity after they had received enough teaching to be helping others.
They had been taught long enough that they should have been able to teach others, yet they still needed the basic principles explained again. The passage points them toward maturity: believers grow in discernment as they receive God’s Word, believe it, obey it, and apply it in ordinary decisions.
God gives this serious warning in mercy so that His people will not remain spiritually immature. The right response is not despair or an attempt to save ourselves, but a return to Christ in repentance, faith, prayer, and obedience.
Inside the book
What the book addresses
The book first names the danger, then shows how readers should respond. It directs them to Christ in repentance and faith rather than leaving them with fear or self-reliance.
Familiar truth without faithful response
How a person can keep hearing Scripture while ignoring its warnings, doubting its promises, and delaying obedience.
How ordinary neglect becomes a habit
How work, family responsibilities, tiredness, distraction, and repeated postponement can slowly crowd out attentive prayer, worship, and Scripture.
Spiritual immaturity where growth should appear
Why Hebrews does not demand perfection, yet does expect believers to grow in understanding, obedience, discernment, and the ability to help others understand and follow God’s Word.
Delayed obedience and repeated excuses
Why asking for more guidance can become a way of postponing the next duty God’s Word has already placed before us.
Learning discernment through obedience
How believers learn to distinguish truth from error, choose what is right, and apply Scripture to daily decisions.
Returning to Christ with hope
Why renewal is not produced by fear, self-punishment, or determination alone, but by coming again to Christ in repentance and faith.
Intended readers
Who may find this book helpful?
This book is written for professing Christians who continue hearing Scripture, attending church, praying, and speaking Christian language but are concerned that they have become less willing to receive correction, confess sin, and obey God’s Word.
It may be especially helpful for believers troubled by delayed repentance, postponed obedience, neglected prayer, inattentive worship, less desire to read Scripture, or a growing habit of resisting correction.
- Believers who want to examine themselves honestly before God.
- Christians who remain active in church while becoming less willing to repent, receive correction, or obey what Scripture makes clear.
- Readers trying to distinguish spiritual weakness from wilful resistance.
- Pastors, teachers, and ministry leaders addressing maturity and discernment.
- Believers who need a clear call to return to Christ in repentance and faith.
Reading approach
What readers can expect
Close attention to Scripture
Hebrews 5:11-14 provides the central warning and direction. Related passages help readers understand repentance, spiritual maturity, discernment, how to hear God’s Word with faith and obedience, and the hope found in Christ.
Pastoral self-examination
The book asks searching questions, but it does not confuse every struggle, grief, illness, or difficulty in prayer with spiritual coldness.
Concrete application
The book helps readers identify delayed confession, postponed obedience, neglected prayer, and excuse-making instead of leaving the problem as a vague sense that something is wrong.
Christ-centred hope
The goal is not constant, fearful self-inspection. It is to return to Christ with faith, confess sin honestly, receive His Word, and grow in obedience through God’s grace.
From the author
Why I wrote this book
About the author
Justus Musinguzi
Justus Musinguzi is a Bible teacher, Christian writer, and founder and editor of TeachTheTreasures.com and its Nations Prayer Directory. Through this work, he writes Bible teaching and prayer resources shaped by Scripture and confessional Reformed theology, with practical help for repentance, faith, obedience, and prayer.
In When the Heart Grows Cold, he explains the warning of Hebrews 5:11-14, helps readers examine delayed repentance and obedience honestly, and directs them back to Christ with hope.
Formats and availability
Read in the format that serves you best
The book is available in Kindle and paperback editions. Amazon shows current pricing, Kindle Unlimited availability when applicable, delivery options, and estimated arrival times.
- KindleDigital reading
- PaperbackPrinted edition
- EnglishPublished July 2026
Kampala and nearby areas
Order a hard copy or ask about local availability
Readers in Kampala and surrounding areas may contact Justus through WhatsApp to order a copy or ask about current stock, collection, or local delivery.
- Kampala and surrounding areas
- Ask about collection or local delivery
- A prefilled message you can edit before sending
Hard copy UGX 35,000
Order or Ask on WhatsAppThe message opens with a request for one copy, which you may edit. Collection and local delivery can be discussed on WhatsApp. The listed price does not include delivery unless Justus confirms otherwise.
Questions about the book
Frequently asked questions
Is this book only for people who have stopped attending church?
No. The book is especially concerned with people who continue hearing sermons, reading Scripture, praying, and taking part in church life while becoming less willing to receive correction, believe God’s promises, and obey His commands.
Does the book treat grief, exhaustion, or difficulty in prayer as spiritual coldness?
No. It distinguishes spiritual dullness from seasons when a believer is tired, grieving, ill, confused, finding it difficult to pray, or struggling to take in Scripture while still clinging to Christ and seeking His help.
What passage forms the centre of the book?
Hebrews 5:11-14 provides the central warning. The passage exposes dull hearing and continued immaturity, and it shows that believers grow in discernment by repeatedly using God’s Word to distinguish truth from error and choose what is right.
Is the book only a warning?
No. The warning is serious, but the book directs readers back to Christ. It calls them to stop excusing sin and postponing obedience, and to respond with repentance, faith, prayer, and obedience.
Where can I read or purchase it?
The Kindle and paperback editions are available through Amazon. The Amazon page displays the current price, Kindle Unlimited status when applicable, and delivery information for your location.
Can I order a hard copy in Kampala?
Yes. The local hard-copy price is UGX 35,000. Readers in Kampala and surrounding areas may contact Justus directly through WhatsApp to order a copy or ask about current stock, collection, and delivery arrangements. Delivery is arranged separately and is not included in the listed price unless Justus confirms otherwise.
