Exodus 6:3
KJV
And I appeared unto Abraham, unto Isaac, and unto Jacob, by the name of God Almighty, but by my name JEHOVAH was I not known to them.
ESV
I appeared to Abraham, to Isaac, and to Jacob, as God Almighty, but by my name the LORD I did not make myself known to them.
The italic words in the KJV play an important role in this verse, along with the fully spelled out name: JEHOVAH. Without them, and especially with how modern versions are worded, it could be easy to read this passage in a completely different sense where: God testifies by his own name that he himself was not known to Abraham, Isaac or Jacob. The NIV, ESV, and NASB in particular seem to read this way because they say, “I did not make myself (fully) known to them.”
Scripture quotations marked (ESV) are from the ESV® Bible (The Holy Bible, English Standard Version®), © 2001 by Crossway, a publishing ministry of Good News Publishers. ESV Text Edition: 2025. The ESV text may not be quoted in any publication made available to the public by a Creative Commons license. The ESV may not be translated in whole or in part into any other language. Used by permission. All rights reserved. www.esv.org