We are first introduced to Mary Magdalene in Luke 8. She is described as a grateful follower of Jesus. Luke 8:2 tells us that Jesus had expelled 7 demons from her, and she followed him, listening to the Good News and helping to support his ministry out of her own means with several other women. Mary was also a devoted follower of Christ and a witness to Jesus’ death on the cross. When all the other apostles were denying Christ and leaving the scene of the cross, she remained until his death and followed to find where he was to be buried. This is recorded in each of the Gospels (Matthew 27:55-56; Mark 15:40-41; John 19:25) She was one of the women who went to the tomb and found only an angel where Jesus was buried (Matthew 28:1-8; Mark 16:1-9; Luke 24:1-11; John 20:1-2) There are also biblical reports in John 20:11-18 that Mary Magdalene was one of the first witnesses of the risen Christ.
For more information about Mary Magdalene, you can read further the chapters and verses I have mentioned in the article above.