Key points from this section:

• Ordination of Joseph Smith and Oliver Cowdery: Section 13 recounts the ordination of Joseph Smith and Oliver Cowdery to the Aaronic Priesthood by John the Baptist on May 15, 18291.

• Keys of the Aaronic Priesthood: The section highlights the keys and powers of the Aaronic Priesthood, including the ministering of angels, the gospel of repentance, and baptism by immersion for the remission of sins1.

• Promise of the Higher Priesthood: It includes a promise that the higher priesthood, known as the Melchizedek Priesthood, would be conferred upon Joseph and Oliver in due time

Read this chapter for free at https://byustudies.byu.edu/online-book/doctrine-and-covenants-contexts/section-13.