ANGELIC TRISAGION PRAYER: PREPARATION FOR THE SOLEMNITY OF THE MOST HOLY TRINITY. 2 min read Preparation for Trinity Sunday Blessed Trinity ANGELIC TRISAGION PRAYER: PREPARATION FOR THE SOLEMNITY OF THE MOST HOLY TRINITY. catholicsstrivingforholiness 6 years ago ANGELIC TRISAGION:PREPARATION FOR THE SOLEMNITY OF THE MOST HOLY TRINITY. For those who wish to learn another devotion to the Blessed Trinity, attached is...Read More