Isaiah (July 6)

Though he had done so many signs before them, they still did not believe in him, so that the word spoken by the prophet Isaiah might be fulfilled:

“Lord, who has believed what he heard from us,
and to whom has the arm of the Lord been revealed?”

Therefore they could not believe. For again Isaiah said,

“He has blinded their eyes
and hardened their heart,
lest they see with their eyes,
and understand with their heart, and turn,
and I would heal them.”

Isaiah said these things because he saw His glory and spoke of Him.  John 12:38-41

From lcms.org's Commemoration Biographies:

Isaiah son of Amoz is considered to be the greatest of the writing prophets and is quoted in the New Testament more than any other Old Testament prophet. His name means “Yahweh, the Lord saves.” Isaiah prophesied to the people of Jerusalem and Judah from about 740 B.C. to 700 B.C. and was a contemporary of the prophets Amos, Hosea, and Micah. Isaiah was a fierce preacher of God's Law, condemning the sin of idolatry. He was also a comforting proclaimer of the Gospel, repeatedly emphasizing God's grace and forgiveness. For this he is sometimes called the “Evangelist of the Old Testament.” No prophet more clearly prophesied about the coming Messiah and his saving kingdom. He foretold the Messiah's miraculous birth (Is 7:14; 9:6), his endless reign (Is 2:1–5; 11:1–16), and his public ministry (Is 61:1–3), but most notably his “Suffering Servant” role and atoning death (52:13—53:12). The apostle John's description of Isaiah, that Isaiah saw Jesus' glory and spoke of him (John 12:41), is an apt summary of Isaiah's prophetic ministry.

Pastor Walter Snyder has written stanzas to add to By All Your Saints in Warfare (LSB 517), including one about Isaiah (search his site for stanzas appropriate for other commemorations).

Coloring pages: Touched by a Burning Coal  (disappointing seraphim..), Preaching,  prophesying Christ,