Resurrection! (but lacking understanding)

John 20:8-9

Early on that first resurrection Sunday morning the terms of the investigation changed sharply.  Beginning with John and later with others of Jesus' disciples -- they "believed".  That is, they were convinced they were no longer looking for a missing body (corpse), but a risen Messiah!  Nevertheless, verse 9 tells the reader, "For as yet they did not know the Scripture, that He must rise again from the dead."