An article by Mike Vinson showing the spiritual significance of Mat 12:40 and Luk 13:32 to answer the question: “was Christ three days and three nights in the grave?”.

Mat 12:40 For as Jonas was three days and three nights in the whale’s belly; so shall the Son of man be three days and three nights in the heart of the earth.

Luk 13:32 And he said unto them, Go ye, and tell that fox, Behold, I cast out devils, and I do cures today and tomorrow, and the third day I shall be perfected

• Was Christ Three Days and Three Nights In The Grave
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  ◊ Was Christ Three Days and Three Nights In The Grave
  

This articles can be found at the iswasandwillbe.com site