What is  passover about:

The passover is a High Holy day  a feast wich we remember how the Most High deliverd our forefathers

from hard bondge out of Egypt, out of  hands of pharaoh. showing them  great plagues using the angel of death. and Moses

to guide the childream of israel to the wilderness and than to the promised land,

exodus 12:12-13-21-23

12 For I will passe through the land of Egypt this night, and will smite all the first borne in the land of Egypt, both man & beast, and against all the gods of Egypt I will execute iudgement: I am the Lord.

13 And the blood shall be to you for a token vpon the houses where you are: and when I see the blood, I will passe ouer you, and the plague shall not bee vpon you to destroy you, when I smite the land of Egypt.

14 And this day shall be vnto you for a memoriall: and you shall keepe in a feast to the Lord, throughout your generations: you shall keepe it a feast by an ordinance for euer.

15 Seuen dayes shall ye eate vnleauened bread, euen the first day yee shall put away leauen out of your houses: For whosoeuer eateth leauened bread, from the first day vntil the seuenth day, that soule shall be cut off from Israel.

16 And in the first day there shalbe an holy conuocation, and in the seuenth day there shall be an holy conuocation to you: no maner of worke shalbe done in them, saue that which euery man must eate, that onely may bee done of you.

17 And yee shall obserue the feast of vnleauened bread: for in this selfe same day haue I brought your armies out of the land of Egypt; therefore shall ye obserue this day in your generations, by an ordinance for euer.

18¶  In the first moneth, on the fourteenth day of the moneth at euen, ye shall eate vnleauened bread vntill the one and twentieth day of the moneth at euen.

19 Seuen dayes shall there bee no leauen found in your houses: for whosoeuer eateth that which is leauened, euen that soule shall be cut off from the congregation of Israel, whether he be a stranger, or borne in the land.

20 Yee shall eate nothing leauened: in all your habitations shall ye eate vnleauened bread.

21¶  Then Moses called for all the Elders of Israel, and said vnto them; Draw out and take you a lambe, according to your families, and kill the Passeouer.

22 And ye shall take a bunch of hysope, and dip it in the blood that is in the bason, and strike the lintel and the two side postes with the blood that is in the bason: and none of you shall goe out at the doore of his house, vntill the morning.

23 For the Lord wil passe through to smite the Egyptians: and when hee seeth the blood vpon the lintel, and on the two side-postes, the Lord will passe ouer the doore, and will not suffer the destroyer to come in vnto your houses to smite you.