4 occurrences in 4 dictionaries
Reference: Pethuel
Easton
vision of God, the father of Joel the prophet (Joe 1:1).
Hastings
The father of the prophet Joel (Joe 1:1).
Morish
Pethu'el
Father of the prophet Joel. Joe 1:1.
Smith
Pethu'el
(vision of God), the father of the prophet Joel.
Joe 1:1
(B.C. before 800.)