How do we know that Mary's faith was genuine?

Mary's faith is evidenced by her actions, which were in stark contrast to the disbelief of the disciples. She understood the significance of Jesus' upcoming death and His resurrection, as acknowledged by His own teachings. In Mark 14:8, Jesus notes that Mary did what she could to prepare Him for burial. This reflects a profound understanding of Jesus’ role in salvation, hinting at her belief in His resurrection. Her actions exemplify the kind of faith that recognizes and responds to Christ's authority and sacrificial role, which is a hallmark of true covenant faith.