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

See also D&C 20: 42, 46, 50, 59.