indoctrinate (someone) into (something)
To teach someone the beliefs and practices of a particular organization or group. His defiance lately makes me think that those new friends of his have indoctrinated him into the ways of their gang.
indoctrinate someone into something
to teach someone the ways of a group or some activity. The staff sought to indoctrinate Walter into the ways of office procedure. Todd indoctrinated Ken into camp life.