Încă din prima zi în mănăstire Serafim a arătat că avea două calităţi excepţionale ale vieţii sale: hrana puţină şi odihna puţină. El mânca o dată în zi, foarte puţin, iar miercurea şi vinerea nu mânca defel. După ce a primit binecuvântare de la [stareţ]], adică părintele său duhovnicesc, a început tot mai des să se retragă în singurătatea pădurii pentru rugăciune şi meditaţie religioasă. La scurt timp s-a îmbolnăvit din nou grav, fiind ţintuit la pat de boală timp de trei ani.
St. Seraphim was once again healed by the Most Holy Virgin Mary, who appeared to him accompanied by several saints. Pointing to the [[ venerable]] Seraphim, the Holy Virgin said to the [[ Apostle]] [[ John the Theologian]]: " He is of our lineage." Then, by touching his side with her staff, she healed him.
His taking of the monastic vows occurred in 1786, when he was 27 years old. He was given the name Seraphim, which in Hebrew means " fiery," or " burning." He was soon made a [[ hierodeacon]]. He justified his name by his extraordinarily burning prayer. He spent all of his time, save for the very shortest of rests, in church. Through such prayer and the labors of religious services, Seraphim became worthy to see [[ angel]] s, both serving and singing in church. During the [[ Liturgy]] on [[ Holy Week| Holy Thursday]], he saw the Lord [[ Jesus Christ]] Himself, in the form of the Son of man, proceeding into the Church with the Heavenly host and blessing those praying. The saint could not speak for a long time after being struck by this vision.