The Father is my hope. The Son is my refuge. The Holy Spirit is my protector. Glory to the holy and undivided Trinity, now and for ever. Let us praise the Father, the Son and the Holy Spirit ...
The feast of the Holy Trinity, which is celebrated on the Sunday after Pentecost, was established for the whole Western Church in 1134 by pope John XII. The Angelic Trisagion is said for the three ...