St. John of Kronstadt

When you are about to pray to our Lady the Holy Virgin, be firmly assured, before praying, that you will not depart from her without having received mercy. To think thus and to have confidence in her is meet and right. She is, the All-Merciful Mother of the All-Merciful God, the Word, and her mercies, incalculably great and innumerable, have been declared from all ages by all Christian Churches; she is, indeed, an abyss of mercies and bounties, as is said of Her in the canon of Odigitry.