Time Covered: c. 778–after 732 B.C.E.

He served during the time of at least four kings of Judah: Uzziah, Jotham, Ahaz, and Hezekiah; evidently beginning about 778 B.C.E. (when Uzziah died, or possibly earlier) and continuing at least till after 732 B.C.E. (Hezekiah’s 14th year), or no less than 46 years. No doubt he had also committed his prophecy to writing by this latter date. (1:1; 6:1; 36:1)