Trito-Isaiah Trito-Isaiah was a Later Prophet in the eighth century BCE. When his name is broken down it means “third” and “Yahweh is salvation” (Who’s who in the Bible). His work is referred to in the last eleven chapters of the book Isaiah. These books at times reveal a close affinity to the words of Deutero-Isaiah. They appear to have been recorded in the early post-Exilic period. He was called to prophecy in about 742 BCE and ministered through the reign of Hezekiah in 687 BCE. The province of Trito-Isaiah’s writings is in the southern part of Israel called Judah. During Trito-Isaiah’s prophecy, the nation of Israel’s temple was still in ruins (Isaiah 64:11)