This Bible contradiction is from the Skeptic's Annotated Bible.

Verses

Yes

Genesis 22:14 View context

And Abraham called the name of that place Jehovah-jireh: as it is said [to] this day, In the mount of the LORD it shall be seen.

No

Exodus 6:3 View context

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.