he expounded all things to his disciples, Mark 4:34.
he expounded unto them in all the scriptures, Luke 24:27.
expounded unto him the way of God, Acts 18:26.
to whom he expounded and testified the kingdom, Acts 28:23.
expounded unto them the plan of redemption, Alma 18:39.
Aaron did expound unto him the scriptures, Alma 22:13 (D&C 24:9).
he did expound all things, 3 Ne. 26:3.
reasoning with and expounding all scriptures, D&C 68:1.
See also D&C 20:42, 46, 50, 59.