'Perfume' in the Bible

Mary was the woman who anointed the Lord with perfume and wiped his feet with her hair. Her brother Lazarus was the one who was ill.

Mary took a litron of very expensive perfume made of pure nard and anointed Jesus' feet. She wiped his feet with her hair, and the house became filled with the fragrance of the perfume.

"Why wasn't this perfume sold for 300 denarii and the money given to the destitute?"