I kept seeing these two differences and was unsure what the differences were between Judah and Israel. 

“Israelites had a single kingdom during the reigns of Solomon and David. After the death of Solomon, the country was divided into two independent kingdoms. The southern region came to be called Judah which consisted of the tribes of Benjamin and Judah. Jerusalem was their capital. The northern region was called Israel which comprised the remaining ten tribes. They had the capital at Samaria.”

Read more: Difference Between Israel and Judah | Difference Between http://www.differencebetween.net/miscellaneous/culture-miscellaneous/difference-between-israel-and-judah/#ixzz4xZxskoPM

Another interesting site on the subject: https://lifehopeandtruth.com/prophecy/12-tribes-of-israel/israel-and-judah/

A neat map on the subject: https://www.bibleodyssey.org/en/tools/map-gallery/i/map-israel-and-judah

Even more: http://www.jewishvirtuallibrary.org/the-two-kingdoms-of-israel

As I always check when I see these passages, it appears that this lamentation has not been found.

https://en.wikipedia.org/wiki/Laments_for_Josiah

“Laments for Josiah is the term used in reference to 2Chronicles 35:25. The passage reads: “And Jeremiah lamented for Josiah: and all the singing men and the singing women spake of Josiah in their lamentations to this day, and made them an ordinance in Israel: and, behold, they are written in the lamentations.”

This source, as described by the Chronicler, should not be confused with the canonical Book of Lamentations. The same event is retold in 1 Esdras 1:32, although it lacks any reference to writing, or the recording of the lamentation. Nevertheless, the dirges referred to in 2 Chronicles and 1 Esdras, as well as Lamentations may refer to a larger corpus of laments that once existed in the temple or palace archives of ancient Jerusalem.”

When I got to Chronicles I realized most of it was a retelling of Judges and Kings. I was curious as to why it would be included in the Bible and what its purpose is…

“First of all, not all of the content of the Chronicles is found in Samuel and Kings. In fact, over half of the content of Chronicles is unique.”  https://www.gotquestions.org/purpose-of-Chronicles.html

“Also interesting is the name of 1 and 2 Chronicles in the  Septuagint  (a Greek translation of the Old Testament produced around 300 BC). The title translates as “The Books of Things Left Out,” referring to additional details surrounding the historical events recorded in the books of Samuel and Kings. Due to the Judean emphasis of the Chronicles, we learn much more about the southern kingdom of Judah and its kings; the books of Kings contain more detail about the northern kingdom of Israel. “

Another site also has some interesting statements, here is a snippet of what they said:http://info.austingrad.edu/christianstudies/things-omitted-why-chronicles-is-important

“Many Christians through the ages have looked at it as an addendum or appendix, with some helpful additions, but paling in importance next to the magisterial history of Samuel and Kings. 

This widespread opinion does not do justice to the importance and influence of Chronicles. First, the theology and purpose of Chronicles is completely different from Samuel and Kings. Samuel and Kings are part of a much longer history, from Joshua to 2 Kings, with Deuteronomy as the introduction. The purpose of this collection is to hold Israel up to the light of the law in Deuteronomy and show how the people have consistently violated the covenant, especially the laws against idolatry. After hundreds of years of warnings given by the prophets, this history shows the inevitable consequence of idolatry —loss of land and exile— as spelled out in Deuteronomy. There is however, hope for Israel. If Israel will repent and return to the Lord, as she had done so often in the past (the period of the Judges, David, Hezekiah, etc.), God would once again hear them and restore them. “


An Ephraimite that is mentioned in 2 Chronicles 25:7 is a member of the Hebrew tribe of Ephraim. https://www.merriam-webster.com/dictionary/Ephraimite

“According to the Bible, the Tribe of Ephraim is descended from a man named Ephraim.[2] This Ephraim is recorded as the son of Joseph, the son of Jacob.[3] The descendants of Joseph formed two of the tribes of Israel, whereas each of the other sons of Jacob was the founder of only one tribe.”

Much more information about the Tribe of Ephraimite can be found here: https://en.wikipedia.org/wiki/Tribe_of_Ephraim

Also if you read the link above, read the last section about “Destiny.” Some interesting stuff I plan to research in more detail at some point.

Both are books probably lost to time, though maybe one day one or all will be found. They are mentioned in 2 Chronicles 9:29

“Now the rest of the acts of Solomon, first and last, are they not written in the book of Nathan the prophet, and in the prophecy of Ahijah the Shilonite, and in the visions of Iddo the seer against Jeroboam the son of Nebat?”

It is also mentioned in 2 Chronicles 12:15 relating to Rehoboam and 2 Chronicles 13:22 relating to Abijah.
https://en.wikipedia.org/wiki/Visions_of_Iddo_the_Seer