Question: who was yoel in the bible?
Answer: He is mentioned by name only once in the Hebrew Bible, in the introduction to that book, as the son of Pethuel (Joel 1:1). The name Joel combines the covenant name of God, YHWH (or Yahweh), and El (god), and has been translated as "one to whom YHWH is God," that is, a worshiper of YHWH.