✦ History & Origin
Known as the Minor Doxology, this prayer dates back to the early Church. It was formulated as a declaration of Trinitarian faith, expressing praise to the Father, the Son, and the Holy Spirit, affirming their equal glory.
✦ Historical Insights & Trivia
The phrase 'Sicut erat in principio' was explicitly expanded during the Arian controversies of the 4th century to emphasize that Jesus Christ is co-eternal with the Father.
It is traditionally recited at the end of every Psalm in the Liturgy of the Hours.
In Gregorian chant, it is sung to various simple psalm tones, shifting depending on the mode of the preceding antiphon.