Bury or Burn?
The English word "bury" originated from an old Anglo-Saxon word which meant to protect or to shelter (the English word burrow originated from the same root word). Humans bury many things to shelter them, whether an ancient pirate's "buried treasure" or a modern-day telecommunications cable. Humans also bury their dead, the first Biblical reference of which was made by the LORD to Abraham (see 'Before Abraham Was, I AM'):
"15:15 And thou shalt go to thy fathers in peace; thou shalt be buried in a good old age." (Genesis 15:15 KJV)
Later, the first recorded land purchase in the Bible was when Abraham purchased a grave site for his wife Sarah (see Abram and Sarai) - a tomb that eventually became the burial place for all of Abraham, Sarah, Isaac, Rebekah, Jacob/Israel and Leah (see The Tombs Of Hebron):
"23:17 And the field of Ephron, which was in Machpelah, which was before Mamre, the field, and the cave which was therein, and all the trees that were in the field, that were in all the borders round about, were made sure 23:18 Unto Abraham for a possession in the presence of the children of Heth [see Hittites], before all that went in at the gate of his city. 23:19 And after this, Abraham buried Sarah his wife in the cave of the field of Machpelah before Mamre: the same is Hebron in the land of Canaan." (Genesis 23:17-19 KJV)
"So shall the Son of man be three days and three nights in the heart of the earth"
While burial is not necessary for the coming resurrection (see What Happened To Tonto?), whenever choice was possible, people of Bible History were buried, not burned - perhaps because they were aware that being physically reduced to ashes is the coming end of the wicked (see They Shall Be Ashes).
A few examples of Biblical burial:
"35:8 But Deborah Rebekah's nurse died, and she was buried beneath Bethel under an oak: and the name of it was called Allonbachuth." (Genesis 35:8 KJV)
Jesus Christ was buried.
"26:12 For in that she hath poured this ointment on my body, she did it for my burial." (Matthew 26:12 KJV; see The Farewell Dinner At Bethany)