AtONEment

The name of the new community was inspired by a passage in the Saint Paul's letter to the Romans (Romans 5:11), which, in speaks of the atonement Christians have received through Jesus. Fr. Paul interpreted the word "atonement" in the literal sense of "at-one-ment," out of his vision that his new community should have the aim of leading all Christians to unity (oneness) with one another.

Source: Franciscan Friars of the Atonement  -  "They Started As Episcopalians in an Abandoned Church, and Ended Up Becoming Catholic Franciscans", https://www.atonementfriars.org/started-as-episcopalians