Happy Passover

it's been written there was a secrifice made...in times of the temple(first and second) people secrificed a lamb at passover eve at the temple.

but even if it wasn't Seder night, Hametz(Bread and stuff) is forbidden throughout the whole passover period...so it couldn't have been bread anyway.
what I'm trying to figure out is the whole fire ceremony at christ's grave at Easter at 15:00 (Jerusalem time) according to the greek orthodox calender...every year for centuries...there must be some logical explanation for fire coming from the sky and I've seen people bathe in that fire and not get burned.