To what extent did Isaiah understand his own prophecies?

Let's do one question at a time!

Did Isaiah understand his own prophecies, in the sense that we do today?

• A NT Scripture can answer this pretty well for you!

  Above all, you must understand that no prophecy of Scripture came about by the prophet's own interpretation of things. (2 Peter 1:20 NIV)

  This NT passage tells us that what Isaiah was writing he did not know was going to be interpreted in light of the messiah instead of a suffering nation of israel in exile.

Would Isaiah, for instance, have known that the Messiah would die for the sins of the world?

• Perhaps. This prophecy was written through Isaiah, but no one realized that the Messiah was going to die for the sins of the world. Even John the Baptist who called Jesus the Lamb of God in John 1 did not think Jesus was going about as the Messiah in the way he thought He would. Jesus' approach towards being the Messiah caught everyone off-guard but in hindsight we see that was how it was always meant to be!

If Isaiah had met Christ before His death, would he have realized he was the Messiah?

• We don't know! The answer could go either way. But one could ask, how does it edify the church to know that Isaiah would have recognized the Messiah?

Or were Isaiah's own words enigmatic to him as they were to the rest of the world, prior to the fulfillment of the prophecies?

• To answer this question, I will refer to the 2 Peter passage above. Apparently the prophet's own interpretation of things (events happening around him, remember, Isaiah was writing about the time of the exile) was not how the prophecy came about. Isaiah was writing about the suffering of the nation of Israel in exile, not knowing that it was also about the Messiah to come! I say this because Isaiah does not make mention in Isaiah 53 that he was telling a prophecy, plus he makes no official mention of a Messiah. Which means that what GOD was saying through Isaiah at one point GOD also used to point towards the Messiah!
• Case in point, no where in that chapter does Isaiah actually use the word "messiah.". This doesn't mean the passage isn't about the messiah, but just that Isaiah wasn't writing thinking "one day people are going to figure out that I am writing about the messiah.". No, he was a prophet trying to explain the suffering of his own people in exile.

Here are some exerpts from the wikipedia page on Is 53...

• "Jewish commentator Rashi believed Isaiah 53 referred to Israel.[7] Rashi, writing in the 11th century, did have some historical precedent for this interpretation, as his commentary became one of the best popular commentaries on the Tanakh.

  Eliyahu Rabbah, which scholars agree was written in the end of the tenth century[8], (Tana Devei Eliyahu) has 3 citations referenced below.

  The first book of the Talmud - Brachot page 5a (compiled between app 220 and 300 CE) applies Is 53 to the people of Israel and those who study Torah..."

and

• "Furthermore, the Midrash known as Tana Devei Eliyahu contains three references to Isaiah 53, applying them to the righteous of Israel (chapters 6, 13, 27).[12]

  Another Midrash, Aleph Beitot (final chapter) quotes Isaiah 53 in reference to the nation of Israel as a whole.[12]

  Midrash Psalms 94:2 applies Isaiah 53:10 to the righteous in general (also in other earlier writings - Mechilta De Rabbi Ishmael)

  Kuzari also identifies Isaiah 53 as the nation of Israel.[12]

  Chovot ha-Levavot also identifies Isaiah 53 as the nation of Israel.[12]"

But all of this goes to say that what man thought was only about one thing, GOD also intended it to point towards the Messiah to come. Which is how most of the prophecies in the OT were found out, after the event of Jesus' life, death, and resurrection!

I hope this helps!

Isaiah wrote for his times and without knowledge of the Christian future. Daniel I Block says in 'My Servant David: Ancient Israel’s Vision of the Messiah', published in Israel’s Messiah (edited by Hess and Carroll), page 22, that in trying to know whether the Israelites of the Old Testament actually understood the Messiah in our terms, it seems we have sometimes imposed on texts meanings and/or significance that go beyond authorial intent.

Isaiah 53:4-6 is part of one of a series of passages known as the Servant Songs (Isaiah 42:1-4, 49:1-6,50:4-11, 52:13-53:12). In these passages, God promises to choose a servant who will teach his true way to the nations. Bruce Feiler says in Where God Was Born, page 314, that in some verses, the servant appears to be a person, in others a group, in some a real figure and in others imaginary. The only time the ‘servant’ is named, the reference is to Israel.

Feiler says they are a focus of dispute between Jews and Christians. Jews have always insisted that the Servant Songs do not refer to Jesus, and this view is strongly supported in those instances where the 'servant' is clearly not a real person. On the other hand, Christians have seen the Servant Songs as prophecies of Jesus.

Of all the Servant Songs, the fourth (Isaiah 52:13-53:12) is the one most suited to prophecy of Jesus. Wikipedia says there is no clear identification for the 'servant' within this song, but that the song could refer to either an individual or a group and, if a group, then likely the nation of Israel. Because of its references to the vicarious sufferings of the servant, many Christians believe this song to be among the Messianic prophecies of Jesus. Some Jews also interpret this passage as a Messianic prophecy, but of a messiah yet to come. We can be sure that the author had neither prophecy in mind as he wrote of the 'suffering servant'. He did not understand his prophecies in either of the senses that Jews or Christians do today.

Peter gives us some insight into this:

10 Concerning this salvation, the prophets, who spoke of the grace that was to come to you, searched intently and with the greatest care, 11 trying to find out the time and circumstances to which the Spirit of Christ in them was pointing when he predicted the sufferings of the Messiah and the glories that would follow. 12 It was revealed to them that they were not serving themselves but you, when they spoke of the things that have now been told you by those who have preached the gospel to you by the Holy Spirit sent from heaven. Even angels long to look into these things. 1 Peter 1:10-12 NIV

Many passages in the Old Testament were considered to be Messianic well before the time of Christ. One theory was that there would actual be two Messiahs. This arose out of an attempt to reconcile what appeared to be both a suffering Messiah and a conquering Messiah. These were known as Messiah Ben Joseph (or Ephraim) and Messiah Ben David.

The Messiah Ben Joseph (son of Joseph) indicated the sufferings that Joseph, the son of Jacob, endured at the hands of his brothers and during the first part of his time in Egypt. Interestingly enough, Joseph became as Pharaoh in Egypt, much like Jesus, who did suffer at the hands of His brothers and the forces of another country, but who now reigns as King of Kings.

Messiah Ben David would be a king.

So, Isaiah, like Peter reveals, likely searched intently and with the greatest care trying to find out the time and circumstances when Messiah would come. He likely did not understand everything about it, but more than likely understand a good bit.