What does the Bible say about Mary anointing Jesus?

In John 12:2-3, Mary takes a pound of very costly spikenard and anoints the feet of Jesus, wiping them with her hair. This act is deeply symbolic; it portrays her understanding of Jesus as the Lamb of God who was to be sacrificed. The anointing not only signifies her worship and devotion but also points to the significance of His crucifixion, as Jesus Himself states this is in preparation for His burial (John 12:7). Mary's actions testify to her intimate relationship with Christ and her recognition of His sacrificial purpose, contrasting sharply with Judas’ criticism of her act as wasteful.