If you every wondered why Easter and Passover do not line up like normal, this article may help explain the Jewish Leap Year that adds a second month of Adar to their calendar.
At the bottom of the page are some video you may want to check out on the same subject.
https://www.chabad.org/library/article_cdo/aid/3210346/jewish/Leap-Year-Explained.htm
Timeless Wisdom
After being rescued from Egyptian slavery and wandering around in the wilderness for 40 years, the Hebrew people finally stood at the edge of the land God had promised.
Though their long-time leader, Moses, had just died, God appointed Joshua to take his place. During this transition of authority, God gave Joshua some wise advice:
“Keep this Book of the Law always on your lips; meditate on it day and night, so that you may be careful to do everything written in it. Then you will be prosperous and successful.”
Joshua 1:8 NIV
The “Book of the Law” refers to the first five books of the Bible—also known as the Torah (in Hebrew) or the Pentateuch (in Greek). Today, we have that and more—66 books of the Bible, including the Old and New Testaments.
God gave the Law to Israel through Moses. These instructions reveal God’s intentions, character, and heart.
And even though God was speaking directly to Joshua at that time, His advice holds timeless ...