He attended Saint Margaret School, Middle Village, New York, followed by Cathedral Preparatory Seminary, Elmhurst, New York He obtained a bachelor’s degree in philosophy from Saint John"s University (New York), and a Master of Divinity degree from Saint Meinrad School of Theology.
Early life and education
After the priestly ordination he received Masters degree in Theology-Catechetical Ministry at Saint John"s University. Ordination and ministry
On 1 April 1978, Libasci was ordained a priest for the Diocese of Rockville Centre. He served as parochial vicar at Saint Raymond’s Parish, East Rockaway (1978–1982), and at Saints Cyril and Methodius Parish, Deer Park, New York (1982–1988).
Parish administrator at Our Lady of Good Counsel Parish, Inwood, (1988–1989), and then pastor of the same parish (1989–2000).
From 2000 to 2007 Libasci was pastor at Saint Therese of Lisieux Parish, Montauk
On 10 December 2004, he was named Honorary Prelate of His Holiness, by Pope John Paul II with the title of monsignor. Auxiliary Bishop of Rockville Centre, New York
Libasci was named titular bishop of Satafis, and auxiliary bishop of Rockville Centre, on 3 April 2007. He received his episcopal consecration on 1 June 2007 from William Murphy, bishop of Rockville Centre, with bishops Emil Aloysius Wcela, Paul Henry Walsh and John Charles Dunne serving as co-consecrators.
As auxiliary bishop, he was episcopal vicar for the Vicariate East (Suffolk County), of the Diocese.
He also celebrated the liturgy for the Ruthenian Catholic community, which celebrates liturgy in the Byzantine rite. Bishop of Manchester, New Hampshire
Bishop Libasci was named as the tenth bishop of Manchester on 19 September 2011, and was installed on December 8.