Also called Axion estin.
Priest. Save us, O most pure Birth-giver of God.
More honourable than the Cherubim, and beyond compare more glorious than the Seraphim, thou who without defilement barest God the Word, true Birth-giver of God, we magnify thee.
From Isabel Florence Hapgood, Service Book of the Holy Orthodox-Catholic Apostolic Church, Houghton Mifflin, 1906, at Matins, p. 14. The book itself — public domain.
“Birth-giver of God” is Hapgood's rendering of Theotokos. It is exact — that is what the Greek means — but almost nobody says it now; you will hear Theotokos or “Mother of God”.
Where these come from. Every prayer here is transcribed from a printed book that is out of copyright, and each one says which book and where in it. That is not fussiness. An English translation of an Orthodox prayer is a copyrighted work in its own right, separately from the Greek or Slavonic behind it, and in 2012 a monastery took a bishop to federal court for putting its translations on a website — and won. So these come from Hapgood's Service Book of 1906 and Shann's Euchology of 1891 and Book of Needs of 1894, which anyone may reprint. More on the sources and what is missing.