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The Church - stripped of its ornaments, the altar bare, and with the door of the empty tabernacle standing open - is as if in mourning. In the fourth century the Apostolic Constitutions described this day as a 'day of mourning, not a day of festive joy,' and this day was called the 'Pasch (passage) of the Crucifixion.'
The liturgical observance of this day of Christ's suffering, crucifixion and death evidently has been in existence from the earliest days of the Church. No Mass is celebrated on this day, but the service of Good Friday is called the Mass of the Presanctified because Communion (in the species of bread) which had already been consecrated on Holy Thursday is given to the people .
https://www.catholic.org/clife/lent/friday.php