Verses with the word expound in the Apocrypha (2 verses):
2 Esdras 4:47
And he said unto me, Stand up upon the right side, and I shall expound the similitude unto thee.
Wisdom of Solomon 8:8
If a man desire much experience, she knoweth things of old, and conjectureth aright what is to come: she knoweth the subtilties of speeches, and can expound dark sentences: she foreseeth signs and wonders, and the events of seasons and times.