Passover is our reassurance from God that he is there to provide us redemption whenever we need Him. Our part is only to invoke Him with pure faith. He will move mountains if need be, for His children's sake. Lets have a look at the history of Passover, where God showers his miracles to save his children, and then take a look at the present celebrations of Passover, and then delve deep into the true meaning of it.

History -

The history of Passover is 3000 years old. The Israelites were held captive by the Egyptian Pharaoh, Ramses II. The Pharaoh enslaved them. It was Moses, a simple shepherd who heard God's command of redeeming them from their slavery. God showed him, that he was the one who would lead the Jews to the Promised Land. Moses, interestingly was born of Israelite parents, but was raised up at the Egyptian royal palace by an Egyptian Princess who could not bear a child. But, his life took a different turn, and God spoke to him about his great responsibility of leading the slaves to a bright future, where they would not have to be slaves of men, but would be followers of the true God. Although, Moses was rich(being a prince before), yet he became poor. He forsook all his riches for the Israelites and plead the Pharaoh to free them.
The proud Pharaoh would not agree to free them and God had to intervene. He send ten plagues in Egypt as a punishment that devastated the land completely. The plagues were as follows:

1.Blood , instead of water
2.Frogs
3.Lice (vermin)
4.gnats
5.Blight (Cattle Disease)
6.Boils
7.Hail
8.Locusts
9.Darkness
10.Slaying of the First Born

It was the Last plague where God warned that he would slain all the first born children of Egypt. Moses could hear the Lord's voice at each moment. This time God commanded the Israelites as below:
Four days before the Exodus(exit from Egypt), the Israelites were commanded by the Lord to set aside a lamb or kid. During the 14th day, they were to sacrifice the lamb and smear its blood to mark their door . Up until midnight on the 15th day, they were to consume the lamb. Each family (or group of families) gathered together to eat a meal that included the meat of the Korban Pesach while the Tenth Plague ravaged Egypt. Whereas, the Israelites were safe inside their homes, Egyptian mothers cried for their first born children. This plague even killed the Pharaoh's son's. The Pharaoh had no choice but to fear the God of the Israelites, and he let them free, finally.

Celebrations Today
Passover is celebrated mostly by the Jews over the world. In Israel, Passover is a seven day festival. Muslims also observe a fast commemorating the Egyptian liberation of Israelites, they call it Ashura. Even the Eastern Orthodox Christian Church observes Passover according to the Jewish calendar. Not to forget that these three religions have a common origin and all of them regard Moses as one of the few God-send prophets.

The True Meaning of Passover

Isaiah. 31:5: "As birds hovering, so will the Lord of hosts protect Jerusalem; He will deliver it as He protecteth it, He will rescue it as He passeth over"
With time history fades off, Moses no longer exists among us physically. 3000 years later, presently, Passover reassures that God delivers his disciples , protects them , rescues them from all plagues and passes over all dangers of life. With the increase in violence, terrorist acts, abductions, rape and basic lack of love among human beings, man can only have faith and look up to the Divine Power. In a dark world like ours, only a divine intervention (much like Moses' time) can pave the way to enlightenment. On this Passover, whether a Jew or not, lets all commemorate the Lord's power, and recall all those moments, on this Passover, when He saved us from grave dangers.

"Keep on believing, God answers prayer!
Keep on believing, He's still up there!"

He has never failed in one of His good promises!