What is the motif of the boy

Manolin is Santiago's only friend and companion. Santiago taught Manolin to fish, and the boy used to go out to sea with the old man until his parents objected to Santiago's bad luck. Manolin still helps Santiago pull in his boat in the evenings and provides the old man with food and bait when he needs it. Manolin is the reader's surrogate in the novel, appreciating Santiago's heroic spirit and skill despite his outward lack of success. Manolin fits the motif of a Christ deciple who follows the old man despite others who scorn him.