31 Days.
66 Books.
1 Bible.
Read the whole Bible chronologically in 31 days. Start any day of the year.
“My people are destroyed for lack of knowledge.”
Hosea 4:6
The journal launches October 30
Available now
Get it on AmazonThe 31/66 Challenge
Genesis to Revelation in one month.
The 31/66 Challenge is a chronological Bible reading plan and guided journal. You read the events of Scripture in the order they happened, about 2 to 4 hours a day, with any Bible you own.
31
Days, start any day
66
Books, Genesis to Revelation
39 + 27
Old and New Testament
1
Bible, any version you own
Free download
YOUR FREE 31/66 CHALLENGE DOWNLOAD
Scripture’s answer to 5 lies the enemy wants you to believe about the Bible, plus Day 1 of the chronological 31/66 Challenge. Free when you join the list, with first access to new merch and future challenges.
Your month.
Your start date.
The plan is fixed at 31 days, so you can begin any day of the year. Pick a day that means something.
01
Birthday month
Start a new year of life in the Word.
02
Anniversary
Read it together as a couple.
03
Rededication
Mark a fresh start with God.
04
Your church, your family or your small group. See Group Orders page for more details
How it works
01
Get a bible
Start a new year of life in the Word.
02
Read in chronological order
About 2 to 4 hours a day, split however it fits your life.
03
Finish with grace
Three built-in Grace Days. They are stay-in days, not quit days.
04
share it
Post your progress and tag #3166challenge.
Wear the finish line.
Made for the 31/66 Challenge: the entire Bible, Genesis to Revelation, in chronological order in 31 days.
"My people are destroyed for lack of knowledge." (Hosea 4:6, KJV)
This shirt says it plainly: ignorance ends here. Wear it on Day 1 as your declaration. Wear it after Day 31 as proof you finished. Wear it anywhere you want to start a conversation about getting into the Word.
The design
- Front: 31/66 Challenge logo with "31 Days | 66 Books | 1 Bible" on the left chest
- Back: Ignorance Ends Here, Hosea 4:6, Transformation in 31 Days
- Want your challenge month and year on it? Shop the personalized version
Doing the challenge?
Pair it with 31/66 Challenge: A Chronological Bible Reading Plan & Guided Journal, available on Amazon. Each day has a theme, a summary, a checkbox reading plan, and a notes page, plus three built-in Grace Days. All you need is a Bible.
Shirt details
- Comfort Colors® 1717 heavyweight tee
- 100% pre-shrunk ring-spun US cotton, 6.1 oz
- Garment-dyed for a soft, lived-in feel
- Relaxed fit
- Available in black and white, sizes S to 4XL
Care
Machine wash cold, inside out. Do not bleach. Tumble dry low. Iron on low heat, not directly on the print. Do not dry clean.
Follow @3166challenge on Instagram and Facebook and tag #3166challenge when you wear it.
Made for the 31/66 Challenge: the entire Bible, Genesis to Revelation, in chronological order in 31 days.
"My people are destroyed for lack of knowledge." (Hosea 4:6, KJV)
This shirt says it plainly: ignorance ends here. Wear it on Day 1 as your declaration. Wear it after Day 31 as proof you finished. Personalize it with the month and year of your challenge, and it becomes your own record of 31 days, 66 books, and 1 Bible.
The design
- Front: 31/66 Challenge logo with "31 Days | 66 Books | 1 Bible" on the left chest
- Back: Ignorance Ends Here, Hosea 4:6, Transformation in 31 Days
- Personalized: your challenge month and year (example: January 2026)
Personalization
Type your month and year exactly as you want them printed. Each shirt is printed as entered, so please double-check spelling before you order. Personalized shirts are made to order just for you.
Doing the challenge?
Pair it with 31/66 Challenge: A Chronological Bible Reading Plan & Guided Journal, available on Amazon. Each day has a theme, a summary, a checkbox reading plan, and a notes page, plus three built-in Grace Days. All you need is a Bible.
Shirt details
- Comfort Colors® 1717 heavyweight tee
- 100% pre-shrunk ring-spun US cotton, 6.1 oz
- Garment-dyed for a soft, lived-in feel
- Relaxed fit
- Available in black and white, sizes S to 4XL
Care
Machine wash cold, inside out. Do not bleach. Tumble dry low. Iron on low heat, not directly on the print. Do not dry clean.
Follow @3166challenge on Instagram and Facebook and tag #3166challenge when you wear it.
“The Holy Spirit gave me a challenge. I said yes.”
Meet Celia
Celia Cross read the entire Bible in 31 days, starting on her birthday, January 7, 2026. The journal she kept became the 31/66 Challenge.
Leader · Teacher · Adventurer · Entrepreneur
“Wisdom is the principal thing; therefore get wisdom:
and with all thy getting get understanding.”
Proverbs 4:7
Ignorance
ends here.
Say yes. All you need is a Bible and a pen.
Reading with a group? See group pricing.