The fourth Glorious Mystery is about Mary, the Mother of Jesus. He loved her so much that when she died Jesus immediately brought her up to heaven. She is seen here at the gate to heaven with an Angel.
The lower window pane photos are the Immaculate Heart of Mary (She was born without original sin and continued her entire life to be without sin) and the serpent surrounding an apple as Mary was considered the “new Eve”. The Immaculate heart of Mary is also seen in the rose window at the front of the church.