4 occurrences in 4 dictionaries
Reference: Igdaliah
Fausets
The "man of God" (i.e. a prophet, one not his own; having parted with all right in himself, to be wholly God's: De 33:1, Moses; Elisha, 2Ki 4:7; Timothy, 2Ti 3:17). Father of Hanan, in the chamber of whose sons Jeremiah (2Ti 4:22) met the Rechabites; as consecrated by its association with his name, it was a fit scene for the divine communication.
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Hastings
A 'man of God,' father of Hanan, whose name is mentioned in connexion with Jeremiah's interview with the Rechabites (Jer 35:4).
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Smith
Igdali'ah
(whom Jehovah makes great), a prophet or holy man --"the man of God" --named once only,
as the father of Hanan. (B.C. before 406.)