Some argue that the Bible is contradictory concerning how long Jehoiachin ruled over Jerusalem. The argument is that 2 Kings 24:8 says that Jehoiachin ruled three months over Jerusalem, but 2 Chronicles 36:9 says that he reigned three months and ten days. However, there are at least two reasonable explanations that solve this alleged contradiction in the Bible.
Jehoiachin was eighteen years old when he became king, and he reigned three months in Jerusalem. His mother’s name was Nehushta the daughter of Elnathan of Jerusalem.
2 Kings 24:8
Jehoiachin was eighteen years old when he became king, and he reigned three months and ten days in Jerusalem. He did what was evil in the sight of the Lord.
2 Chronicles 36:9
There are at least two reasonable explanations that would resolve this alleged contradiction:
The most probable explanation for the difference between 2 Kings 24:8 and 2 Chronicles 36:9 is that 2 Kings 24:8 is simply rounding to the nearest month, while 2 Chronicles 36:9 gives a more precise length of time.
It is also possible that the discrepancy is due to a copyist error. This is reasonable to believe, since the difference between the Hebrew characters for three months and three months and ten days is very small.
There are some foundational principles that apply to all alleged and apparent contradictions in the Bible. To read more, see Bible Difficulties: Foundational Principles.
To read more answers to alleged and apparent contradictions in the Bible, see “Contradictions” in the Bible Answered.
These books are also excellent resources:
Evidence That Demands a Verdict: Life-Changing Truth for a Skeptical World - Josh and Sean McDowell
Little Pilgrim's Progress (Illustrated Edition) - Helen L. Taylor