Cremation is a method of disposing of a dead body by burning it to ashes, usually in a specially designed furnace called a crematorium, it is certain that ever body will die one day,biologically when human die they are buried and gradually decompose until the bone is left,but in some cultures the body is cremated,
Ezekiel 37 vs 4-5.
Again he said unto me, prophecy upon these bones,and say unto them, O ye dry bones, hear the word of the lord.
Thus saith the Lord God unto these bones; i will will cause breath to enter into yo, and ye shall live.
Irrespective of the method of burying a person either by cremation or by burying 6 feet, the lord has assured us that on the last day he shall raise the even the dryest of bones and shall breath life unto them. So let us live according to God's will so that we at the last day, we can make heaven .
Remain Blessed !