Old Testament
Isaiah 40:21
The Clear Bible Translation matches the King James Version, written at a 10th-grade reading level in plain English
At a Glance
In Isaiah 40:21, the prophet is emphasizing the importance of understanding God's sovereignty and power over creation.
- Author
- Isaiah the prophet
- Written
- Around 700 BC
- Genre
- Prophecy
- Original Audience
- Judah and the surrounding nations
Don't you know this? Haven't you heard? Hasn't this been explained to you from the very beginning? Haven't you understood it since the earth was made?
Have ye not known? have ye not heard? hath it not been told you from the beginning? have ye not understood from the foundations of the earth?
Verse Analysis
Plain-English insight for readers
In Isaiah 40:21, the prophet is emphasizing the importance of understanding God's sovereignty and power over creation. He poses a series of rhetorical questions to challenge the listeners' awareness of God's greatness. The verse suggests that the knowledge of God's existence and His role as Creator has been evident since the beginning of time. It implies that people should recognize the signs of God's handiwork in the world around them. The questions serve to remind the audience that they should not be ignorant of these truths, as they have been communicated throughout history. This passage encourages believers to reflect on the foundational truths of their faith and to acknowledge the majesty of God in the context of the universe He created. It calls for a deeper understanding of God's nature and His eternal presence, urging individuals to recognize their place in His grand design.
Related Bible verses
How to apply Isaiah 40:21 to your life
This verse encourages us to actively seek knowledge about God and His creation. We should not take for granted the truths that have been revealed to us. By studying scripture and observing the world, we can deepen our understanding of God's nature and His plans for us, fostering a stronger faith.
Curated for this public verse page. Isaiah Summary
Frequently Asked Questions
Quick, clear answers about this verse
What does Isaiah 40:21 mean?
Isaiah 40:21 emphasizes the importance of recognizing God's sovereignty and power as the Creator. The verse uses rhetorical questions to challenge listeners to acknowledge the evident truths about God that have been known since the beginning of time.
What is the significance of rhetorical questions in Isaiah 40:21?
The rhetorical questions in Isaiah 40:21 serve to provoke thought and reflection among the listeners. They highlight the expectation that people should already understand God's greatness and the foundational truths about His creation.
How does Isaiah 40:21 relate to God's creation?
Isaiah 40:21 relates to God's creation by reminding us that His existence and power have been clear since the earth was made. It encourages believers to recognize the signs of God's handiwork in the world around them.
What themes are present in Isaiah 40:21?
Key themes in Isaiah 40:21 include God's sovereignty, the significance of creation, and the call for awareness of God's presence. The verse also highlights the importance of understanding foundational truths about God.

The Book of Isaiah
Isaiah 41: Fear Not, I Am With You
The LORD calls the nations to keep silence before him and to renew their strength. He asks who raises up the righteous man from the east and gives nations before him, making him rule over kings. He says he gives them as dust to his sword and as driven stubble to his bow, and he declares he is the first and with the last.
Unlock the full Isaiah summary
Continue reading every chapter — themes, structure, and turning points.
The complete summary of Isaiah — a chapter-by-chapter breakdown covering all 66 chapters.
What you get
Every chapter of Isaiah summarized in clear, modern English
How each section connects — narrative flow, key themes, and turning points
Permanent access — read anytime, on any device
Best value • Save over 90%
One-time purchase • Access anytime
ClearBible summaries are proprietary content and may not be copied, republished, or resold.
Checkout works as a guest. After payment, you create an account to claim your unlock.