A reference Jesus made about Jonah who spent three days "in the belly of the beast".
Jesus spent thirty years, three days, "in the heart of the earth", as dead as Moses was for half his life, tempted by the devil in the wilderness, (outside the jurisdiction of Jewish law), while living among the wild beasts (the Romans) presumably doing what Romans do in the wilderness.
And then left the whitewashed tomb, a comparison he made to pharisaic beliefs and practices.
And then ascended into heaven, little by little, day by day, until he was crucified, and rose again, appearing to his friends in dreams which convinced them he was righteous and survived death.