We have encountered books with such titles as “The Feasts of Israel.” Such books can be enjoyed by Christians because they are designed to teach lessons of the Holy Days, but without actually expecting anyone to observe or celebrate these days. However, Scripturally these days are not called ”the Feasts of Israel.” In the King James Bible, in Leviticus 23:2, they are called “the feasts of the LORD,” not the “feasts of Israel.” In the original Hebrew, they are called “Mo’edei YHWH.” A “mo’ed” is an appointed time.
In the Old Testament, Passover evolved from a private family sacrifice of the paschal lamb to an elaborate and solemn sacrifice at the Temple in Jerusalem. In spite of its evolution, the underlying theme of Passover remained the same: the commemoration of the supernatural deliverance of Israel from Egyptian bondage which brought freedom and new life to the people.
Concurrent with the remembrance of Passover— and in Jewish tradition witnessed in the New Testament and today often just called by the general season “Passover”—is the Festival of Unleavened Bread: “Then on the fifteenth day of the same month there is the Feast of Unleavened Bread to the LORD; for seven days you shall eat unleavened bread. On the first day you shall have a holy convocation; you shall not do any laborious work. But for seven days you shall present an offering by fire to the LORD. On the seventh day is a holy convocation; you shall not do any laborious work” (Leviticus 23:6-8).