What evidence connects Isaiah with the Temple in Jerusalem?

The primary evidence connecting the prophet Isaiah to the Temple of Jerusalem is his inaugural vision, recorded in the sixth chapter of the Book of Isaiah.12

In this account, which occurred around 742 BCE, Isaiah describes a mystical experience in which he saw the Lord enthroned in a celestial temple, attended by seraphim. Scholars suggest that this vision was likely set within the actual Jerusalem Temple, as the imagery—including the burning incense and the altar—reflects the sanctuary's ceremonial and ritualistic environment.21

Beyond this vision, Isaiah’s deep familiarity with the Temple’s rich imagery, ritual practices, and the theology surrounding Mt. Zion suggests he held a position as a priest-prophet. This intimate acquaintance with the Temple allowed him to interpret and advise the people of Judah, grounding his message in the belief that God dwelt within the Temple and the city of Jerusalem. While some have cited his knowledge of cultic matters as potential evidence of priestly descent, others note that this is not definitive, especially given his frequent, sharp condemnations of the religious establishment and their superficial offerings.23