Undecayable relic of a saint`s body.

In Orthodox Christianity it is believed that bodies of real saints does not decay and themselves are a powerful source of grace and kind of link to the God. Undecayable bodies of different saints could have different powers. Under normal circumstances, parisioners touch or kiss saint''s body asking God to help. IDK, just like on funerals, people touch or kiss deceased to say goodbye, send message to other side or whatever, but in this case, deceased body does not decay or rot for millenia, so any parisioner could participate in kind of eternal funeral of that saint and try to ask saint for help, get some God's grace or send God a message.

However, many crypts with undecayed bodies was destroyed during wars, thefts and so on. Jewish Bolsheviks in Russia had a special program with state financing and even special jewish squadron to destroy all orthodox saint bodies from hijacked monasteries and churches. Nearly all crypts and graves was searched and if a body inside was undecayed, it was seized and then destroyed one way or another, usually they burnt them. Interesting that it was done regardless of the saintness status of dead person. Jews took enormous effort to get rid of all that undecayable artifacts they could find. Even if you think that that undecayable bodies of saints are bullshit or curiosity, then think again. Jews think they are very important and should be destroyed. This whole reddit thread is a proof that they still think so and still trying to a least mock that phenomena.

So, sometimes from that undecayed bodies of saints, only finger ot foot left. It is believed that even such small part have properties of whole body.

In that video, priest, presumably, mass-producing holy water using a foot of some saint, who, may be was known also as a great holy water maker or had especially close relations with God. Looks weird, I know,, but if you are aware of background it is pretty logical. :)