What is "to read one's self in"

Read \Read\ (r[=e]d), v. t. [imp. & p. p. Read (r[e^]d); p. pr. & vb. n. Reading.] [OE. reden, r[ae]den, AS. r[=ae]dan to read, advise, counsel, fr. r[=ae]d advice, counsel, r[=ae]dan (imperf. reord) to advise, counsel, guess; akin to D. raden to advise, G. raten, rathen, Icel. r[=a][eth]a, Goth. r[=e]dan (in comp.), and perh. also to Skr. r[=a]dh to succeed. [root]116. Cf. Riddle.]

1. To advise; to counsel. [Obs.] See Rede.

   Therefore, I read thee, get thee to God's word, and thereby try all doctrine.
   --Tyndale.

2. To interpret; to explain; as, to read a riddle.

3. To tell; to declare; to recite. [Obs.]

   But read how art thou named, and of what kin.
   --Spenser.

4. To go over, as characters or words, and utter aloud, or recite to one's self inaudibly; to take in the sense of, as of language, by interpreting the characters with which it is expressed; to peruse; as, to read a discourse; to read the letters of an alphabet; to read figures; to read the notes of music, or to read music; to read a book.

   Redeth [read ye] the great poet of Itaille.
   --Chaucer.

   Well could he rede a lesson or a story.
   --Chaucer.

5. Hence, to know fully; to comprehend.

   Who is't can read a woman?
   --Shak.

6. To discover or understand by characters, marks, features, etc.; to learn by observation.

   An armed corse did lie, In whose dead face he read great magnanimity.
   --Spenser.

   Those about her From her shall read the perfect ways of honor.
   --Shak.

7. To make a special study of, as by perusing textbooks; as, to read theology or law.

   To read one's self in, to read aloud the Thirty-nine Articles and the Declaration of Assent, -- required of a clergyman of the Church of England when he first officiates in a new benefice.