The origins of the Passover is explained this way in the Old TestamentThe Old Testament in the Bible is a collection of 39 books, written in Hebrew and Aramaic, between 1446 B.C. and 425 B.C. They were then translated into a Greek manuscript called the Septuagint between the second and forth centuries B.C. Jesus referred to the Hebrew manuscripts as the Law, the Proph... More of the Bible as found in Exodus 12:11-14 and reads: 11 ‘Now you shall eat it in this manner: with your loins girded, your sandals on your feet, and your staff in your hand; and you shall eat it in haste — it is the Lord’s Passover. 12 ‘For I will go through the land of Egypt on that night, and will strike down all the first-born in the land of Egypt, both man and beast; and against all the gods of Egypt I will execute judgments — I am the Lord. 13 ‘And the blood shall be a sign for you on the houses where you live; and when I see the blood I will pass over you, and no plague will befall you to destroy you when I strike the land of Egypt. 14 ‘Now this day will be a memorial to you, and you shall celebrate it as a feast to the Lord; throughout your generations you are to celebrate it as a permanent ordinance. (NASBNASB stands for "New American Standard" version of the Bible. The NASB was produced through the Lockman Foundation in 1960 and its translation is based on the Hebrew text and the Alexandrian Text type of the Greek New Testament, with NT copies dating as early as the second century A.D.)
