Solving Approach
Words in this cipher average roughly 4.4 letters apiece. Short words are common here, so scan for one- and two-letter groups first; they narrow the alphabet fast. At medium difficulty, expect to lean on letter frequency and word patterns rather than a single obvious giveaway.
About Isaiah
Isaiah was a Hebrew prophet who lived in Jerusalem during the eighth century BCE, active during the reigns of several Judean kings including Uzziah, Jotham, Ahaz, and Hezekiah. The book bearing his name is one of the longest in the Hebrew Bible and contains poetry, prophecy, and prose addressing political crises of his era, including the Assyrian threat to Judah. Scholars widely regard Isaiah as among the most literarily sophisticated voices in ancient Near Eastern writing, and his texts have been extensively quoted and referenced throughout subsequent Jewish and Christian traditions.
Did you know? The book of Isaiah is quoted or referenced in the New Testament more frequently than any other prophetic book, making it one of the most cited texts in early Christian literature.