Lord Jesus Christ, Son of God, prayers for the sake of Your Most Pure Mother and all the saints, have mercy on us. Amen.
For prayers - for prayers.
Thy Most Pure Mother - Thy Most Pure Mother (genitive case). Here are more examples of similar forms from the prayer book: cleanse us from all filth (prayer to the Holy Spirit) - cleanse us from all filth; the pleasure of endless and blissful life (memory of the departed) - the pleasure of endless and blissful life; the goodness and mercy of the All-Holy Trinity (from prayers for those coming to sleep, to the Guardian Angel) - the goodness and mercy of the All-Holy Trinity.
+ “...How! Does God have the power to forgive sins through the prayers of His Most Pure Mother and saints, and not Himself independently? - And without the prayers of others he has power - of course, One has power; but in order to honor the high virtues of the saints, especially His Most Pure Mother, who are His friends, who pleased Him to the last strength in earthly life, He accepts their prayerful intercessions for us, the unworthy, for us, who often must stop their lips due to their great and frequent falls... Through the prayer of His Most Pure Mother, He has mercy on us, who are on our own, for great and frequent sins and iniquities, and would be unworthy of His mercy.
Holy Righteous John of Kronstadt
Glory to Thee, our God, glory to Thee.
This prayer is called a small doxology: we briefly glorify God and give Him praise.
With deep feeling, with all the soul, this doxology can be pronounced in all circumstances of life, in joy and sorrow. The truly Christian feeling of life, which we must approach as best we can, is in the last words of St. John Chrysostom, who died in persecution, in severe exile: Glory to God for everything!