Glory Be
Gloria Patri
A short hymn of praise to the Trinity, of the kind the early Church used to close psalms and prayers. Its wording was fixed in the 4th century, when the Church was defending the equal divinity of the Son and the Spirit against Arianism. It asks for nothing; it simply gives God glory, which is why it ends every decade of the Rosary and every psalm of the Liturgy of the Hours.
Ancient doxology, 4th-century form
Glory be to the Father, and to the Son, and to the Holy Spirit,
as it was in the beginning, is now, and ever shall be,
world without end.
Amen.