"I am no prophet, nor a prophet's son,..." (Book of Amos)

Then Amos answered Amaziah
'I am no prophet, nor a prophet's son; but
I am a herdsman, and a dresser of sycamore trees,
and the Lord took me from following the flock,
and the Lord said to me, 'Go, prophesy to my people Israel.''

SOURCE: "The Book of Amos - 7,14-15" - "The New Oxford Annotated Bible with the Apocrypha - New Revised Standard Version"