In John 12 it is said that Mary had anointed Christ with an expensive perfume while he was at Lazarus house. Christ had alluded to this as the preparation for his burial.
John 12:3 NIV: Then Mary took about a pint of pure nard, an expensive perfume; she poured it on Jesus’ feet and wiped his feet with her hair. And the house was filled with the fragrance of the perfume.
But later after he had been buried some women went to his grave with some spices to anoint his body
Mark 16:1 NIV When the Sabbath was over, Mary Magdalene, Mary the mother of James, and Salome bought spices so that they might go to anoint Jesus’ body
Why did the women want to anoint his body after it had already been prepared for his burial?