Joel, a prophet of Judah, probably exercised his ministry during the reign of Joash (2Chr 22. to 24.). In his youth he may have known Elijah, and he certainly was a contemporary of Elisha. The plagues of insects, which were the token of the divine chastening, give occasion for the unveiling of the coming "day of the Lord" ( Isaiah 2:12, refs.), in its two aspects of judgment on the Gentiles and blessing for Israel.
Joel is in three chief parts: