Seraphim of Sarov (born Prokhor Isidorovich Moshnin) (30 July [O.S. 19 July] 1754 – 14 January [O.S. 2 January] 1833) is a hieromonk of the Sarov monastery, a founder and the spiritual leader of the Diveyevo Convent. He is one of the most honored Orthodox saints.
Seraphim of Sarov is renowned for his devotion to Mother of God (God-bearer) to Whom he dedicated his whole life.
“When Seraphim of Sarov saw Mother of God in his vision, when he realized how insignificant and sinful he was, how evolutionarily far he was from the Beloved Being, he stood on a stone and then for thousand days and nights was begging: “O, Lord! Save me and have mercy on me, the sinner!” Thousand days and nights! He came to this inherently! He just realized that he was sinful, and it was shameful and painful beyond all bearing. He didn’t demand anything from anyone – following the old logic of self-affirmation – but he was imploring forgiveness and was disappearing, dying before the Highest Light”.
Lyudmila Reznik “Path on the Water”, chapter “The Exactingness of Men”.