What does Exodus 12:25 mean?
When God called Abraham—then named Abram (Genesis 12:1–3)—the call included a guarantee of specific territory intended for Abraham's descendants (Genesis 15:7). The Lord predicted that future generations would be trapped in a foreign land for centuries (Genesis 15:13–14). Before Joseph, Abraham's great-grandson (Genesis 21:3; 25:26; 37:3), died in Egypt, he made his family promise to carry his bones into this Promised Land (Genesis 50:25). This land inheritance to Abraham's descendants is the same promise about which Moses is speaking here.A prominent fulfillment of this prophecy will occur prior to the battle of Jericho (Joshua 5:11). While in the very Promised Land they were seeking, Israel celebrated the Passover. Other mentions of Passover celebrations are seen in the Old Testament (2 Kings 23; 2 Chronicles 30; 35; Ezra 6:19–20; Ezekiel 45:21). Jesus and His disciples also participated in Passover (Luke 22:15). It was a Passover evening when Jesus was arrested, later to die as a sacrifice for all who believe (1 Corinthians 5:7).
Exodus 12:1–28 records the Lord's instructions for the first observation of Passover. The Israelites are to sacrifice lambs and prepare a specific set of foods. These must be eaten while dressed for travel. The lamb's blood is to be collected at the threshold of the door and then applied to the top and side posts. On that first Passover, God will kill the firstborn of Egypt (Exodus 11:4–6). Houses marked with the lamb's blood will be spared: God's judgment will "pass over" them without harm (Exodus 11:7). This event will establish a new start for Israel's yearly calendar. It is to be commemorated every year by using various symbolic elements. Future generations are to be carefully taught the meaning of these things.
Israel is to realign their calendar to begin with the current month. They receive instructions to prepare a special meal. This includes sacrificing lambs and applying their blood to the doorway of each home. Following these instructions will cause God's wrath to "pass over" that house. Egypt's firstborn are killed and they demand Israel leave immediately. The people quickly gather their belongings and march out in a single massive group. These events are to be remembered with festivals to be celebrated for all time.