I wish I knew the answer to that.
You won;t find that in the New Testament or Old among God's people. Moses "bones" were buried or put in a cave somewhere.
This is a pagan thing and not something God told believers to do, at least not in my Bible. Nor the masoretic text or the Septuigent which both are texts and as close to originals that what we call the Bible came from.
They are old and ancient and many of the books were writenin 500 BC , some older and some newer.
The Torah was written by Moses much earlier than that.
Anyway, cremation is not a means of burial that God ever had in mind for his people.
So I particularly do not understand Christians who do this.
I suppose it could be to save money and costs for those left behind but even so I find it very scary to do something that God did not say was alright. He said to BURY the dead, not burn them.
Interesting question about this thing called cremation and whether it is right for Chritians to do such a thing or not.... In my Church we say no it is not... BAsed on Biblical teachings..
But obviously we cannot tell people what to do or coerce anyone. Can only explain what God says about death and burying the body.... One day it will be raised from the grave. Kind of hard to do that when there is no grave, and nor remains to the body at all.
Just my viewopint and I am confident there will be different ones.....