The study aimed to analyze the text of Mk 10,41-45 which states that "the Son of man came to serve and give his life in ransom for many." After researching the expression "Son of man" in extra-biblical books, OT and NT, the Marcan text was examined through the steps of the Historical-Critical Method. These assumptions were decisive in determining with greater certainty the meaning of the term "rescue", not only in the evangelist's pen, but also in the Old Testament context and in Greco-Roman culture. The dissertation seeks to reflect on Mark's view of the rescue performed by Jesus understood as a service made by him as Son of man. Finally, through all the study carried out, it was possible to confirm that the Son of Man understood himself as a commissioned servant from God to carry out a mission on behalf of all sinful humanity.