Christ was buried on Friday and rose on Sunday. Where are the three days and three nights?

We must take into account the Jewish methods of calculation prevalent at the time. The Jews used the expression three days and three nights for three periods of daylight and darkness as opposed to three periods of daylight only. Friday, Saturday, and Sunday were three periods of daylight to be taken as including periods of darkness. Whether the periods of darkness were complete or not, the Jews would speak of the whole section of time as three days and three nights. Thus in the Book of Esther V., 1, the Jews were told to fast for three days and three nights. Yet after two nights according to our way of calculating, but in the third period of daylight, the fast ended.

Radio Replies Volume 1 by Rev. Dr. Leslie Rumble MSC and Rev. Charles Mortimer Carty