Who is Gabriel and why did Jonas' father want to know his name?

Gabriel is a baby who is assigned to Jonas's family for temporary care due to his failure to thrive in his own family unit. Jonas's father, who works as a Nurturer, wants to know Gabriel's name because he believes that giving a child a name can help foster a stronger emotional connection and support the child's development. Additionally, Jonas's father has developed a bond with Gabriel, which makes him more invested in the child's well-being.