Six days before Passover, Jesus arrived in Bethany. Lazarus, whom Jesus had brought back to life, lived there. Dinner was prepared for Jesus in Bethany. Martha served the dinner, and Lazarus was one of the people eating with Jesus. Then Mary took a twelve-ounce jar of expensive perfume made from essence of nard, and she anointed Jesus' feet with it, wiping his feet with her hair. The house was filled with the fragrance. But Judas Iscariot, the disciple who would soon betray him, said, "Why wasn't this perfume sold and the money given to the poor? It was worth a year's wages." He did not say this because he cared about the poor but because he was a thief; as keeper of the money bag, he used to help himself to what was put into it. Jesus replied, "Leave her alone. She did this in preparation for my burial You will always have the poor among you, but you will not always have me."
source from bible, John 12:1-8