Agni Parthene was originally written by St. Nectarios in Greek.
Here’s an English translation of it.
(A) O pure and virgin Lady,/ O spotless Theotokos: Rejoice, O unwedded Bride!
O Virgin Queen and Mother/ O dewey fleece most sacred:/ Rejoice, O unwedded Bride!
(B) O height transcending heaven above/ O beam of light most radiant:/ Rejoice, O unwedded Bride!
O joy of chaste and virgin maids/ surpassing all the angels:/ Rejoice, O unwedded Bride!
(C) O brilliant light of heaven above/ most clear and most radiant: / Rejoice, O unwedded Bride!
Commanding chief of heaven above/ O holiest of holies/ Rejoice, O unwedded Bride!
(A) O ever-virgin Mary/ O Mistress of creation:/ Rejoice, O unwedded Bride!
O Bride all-pure and spotless/ O Lady all-holy:/ Rejoice, O unwedded Bride!
(B) O holy Mary, Bride and Queen/ O cause of our rejoicing/ Rejoice, O unwedded Bride!
O Maiden Queen most hon’rable/ O Mother most holy/ Rejoice, O unwedded Bride!
(C) More precious than the cherubim/ more glorious than the seraphim:/ Rejoice, O unwedded Bride!
Surpassing principalities/ dominions, thrones and powers:/ Rejoice, O unwedded Bride!
(A) Rejoice, song of the cherubim/ Rejoice, hymn of the angels:/ Rejoice, O unwedded Bride!
Rejoice, ode of the seraphim/ and joy of the archangels:/ Rejoice, O unwedded Bride!
(B) Rejoice, o peace; Rejoice, o joy/ and haven of salvation: Rejoice, O unwedded Bride!
O bridal chamber of the Word/ unfading, fragrant blossom:/ Rejoice, O unwedded Bride!
(C) Rejoice, delight of paradise/ Rejoice, life everlasting: / Rejoice, O unwedded Bride!
Rejoice, o holy tree of life/ and fount of immortality:/ Rejoice, O unwedded Bride!