As part of the Passover prior to the feast in preparation a woman used the proper burial ceremonial law .
But they said, Not on the feast day, lest there be an uproar among the people. Now when Jesus was in Bethany, in the house of Simon the leper,There came unto him a woman having an alabaster box of very precious ointment, and poured it on his head, as he sat at meat. But when his disciples saw it, they had indignation, saying, To what purpose is this waste? Mat 26:5
The disciples did not understand and called it to question and Christ gave His understanding. It represented the gospel
For in that she hath poured this ointment on my body, she did it for my burial. Verily I say unto you, Whosesoever this gospel shall be preached in the whole world, there shall also this, that this woman hath done, be told for a memorial of her. Mat 26:12
I think that was Thursday the beginning of the three days and three nights, in the heart of the earth (the belly of the fish) a term I believe that speaks of great suffering, using the word hell to describe it.. It is not the word tomb or grave. God cannot die.