Today we celebrate the Feast of the Holy Trinity which is a mystery difficult to comprehend. in our daily life, we begin every one of our prayers, activities, programmes or works with the sign of the cross and call upon God, '' In the name of the Father, and of the Son and of the Holy Spirit.'' Even though we remember the Trinity several times a day, it is difficult to comprehend the full meaning because the Father, the Son and the Holy Spirit we invoke constitute a great Mystery. The Mystery of the Most Holy Trinity consists of this; the Father is God, The Son is God, and the Holy Spirit is God and yet there are not three Gods, but only one God with three attributes.