"I truly believe with all my heart that Margaret and Paula would tell us that we need to keep loving," said the priest during the Aug. 29 Mass.
Father Plata is sacramental administrator of St. Thomas the Apostle Church in Lexington, Mississippi, the parish in which the sisters were active.
Sister Margaret, a member of the School Sisters of St. Francis in Milwaukee, and Sister Paula, a member of the Sisters of Charity of Nazareth in Kentucky, were recalled by family and friends in prayer services and Masses in the days after they were found dead Aug. 25 in the Durant, Mississippi, home they shared.
Rodney Earl Sanders, 46, of Kosciusko, Mississippi, has been charged with two counts of capital murder, larceny and burglary in connection with the incident.
The day before the Mass, representatives of the sisters' religious communities and families issued a statement opposing the death penalty for the suspect charged in their deaths.
"Many people will be dismayed, even angered at the joint statement the School Sisters of St. Francis and the Sisters of Charity made stating that they are opposed to the death penalty that could be imposed on the person who committed this terrible crime," Father Plata said at the Mass. "But think of the powerful statement that makes. At the heart of Christianity is forgiveness. 'Father forgive them for they know not what they do.'
"Forgiveness isn't something we do on our own. It is something we choose to do with God's grace," the Franciscan said.
During a brief vigil at the sisters' home Aug. 27, representatives of the religious orders called for a period of reflection and remembrance.
Sister Susan Gatz, president of the Sisters of Charity of Nazareth, and Sister Rosemarie Rombalski, of the School Sisters of St. Francis, went into the women's home prior to the ceremony for prayer, closure and reflection. In the kitchen, they discovered a loaf of bread in a bread maker. The simple act -- typical of the sisters who were known for being generous with their good food -- turned into a life-giving symbol for the communities.
"Marge and Paula really had that sense of offering bread to each other. The bread of life, the bread of energy, the bread of hope," Sister Rosemarie said.
The Sisters broke the loaf in half to share with their respective communities in Milwaukee and Nazareth, Kentucky.
About 300 people gathered at St. Thomas Church the evening of Aug. 27 for another vigil. In addition to the more than 100 people packed inside the tiny sanctuary, another 200 watched a video feed from a tent on the lawn.
Bishop Joseph R. Kopacz of Jackson presided over the service, but Father Plata offered a homily. He remembered the sisters as great cooks, gardeners, generous souls and hopeful women of the Gospel.
"As Christians, we only have one choice, to move on in hope," he said.
As the families cope with the loss of their loved ones, they also worry about the people of Durant and Lexington.
"A big hole in the universe and in our hearts," is how Annette Held described losing her older sister. "Sister Margaret was a wonderful and gracious person, always a concerned about others and certainly the spiritual leader of the family. This tragedy is leaving a big hole for us. We are also worried because there is no one to carry their ministry now and that has been very important for so long for the community they lived in and for our family too. We keep wishing we knew what will happen next at the clinic."
Rosemarie Merrill, Sister Paula's sister and who made the trip to Mississippi from her home in Stoneham, Massachusetts, expressed a similar concern.
"(Sister Paula's) faith was very strong. And she was a wonderful nurse," she said. "I feel so bad for the people of Holmes County because they've lost so much. The care they provided leaves a huge void. They would do anything for their patients."