I was surprised when in Isa 6:9-10, following the often cited passage about Isaiah's famous vision in Isa 6:1-4, his purification with coal in Isa 6:5--7, and Isaiah's famous offer in Isa 6:8 celebrated in songs "Here I am. Send me" that exhort Christians today to become missionaries, that God wanted Isaiah to do the VERY OPPOSITE of what missionaries do:
Go! Say to these people:
Keep listening, but do not understand;
keep looking, but do not perceive.
Make the minds of these people dull;
deafen their ears and blind their eyes;
otherwise they might see with their eyes
and hear with their ears,
understand with their minds,
turn back [repent], and be healed.
Weren't prophets sent by God to tell people to know and understand Him better and to repent so God can heal them, but in this passage God wanted the exact opposite ("otherwise, they might see..., hear..., understand... and be healed").
What's interesting is how the passage's overall meaning was sometimes changed when the NT authors placed the quote in the mouth of Jesus in each of the 4 gospels (Matt 13:14-15, Mark 4:11-12, Luke 8:10, John 12:37-43), in Romans 11:7-8, and in the mouth of Paul in Acts 28:26-27:
- Matt 13:14-15: Jesus seems to do what Isaiah was commanded to do by speaking in parables to the people but revealed the secrets of the kingdom to the disciples.
- Mark 4:11-12, Luke 8:10: less context than Matthew but same reason.
- John 12:37-43: This is the explanation that makes the most sense (i.e. an explanation why despite the signs the people were unable to believe is because Isaiah saw God's glory similar to how the disciples saw Jesus's glory in Transfiguration), but then it changes the meaning in Isaiah since in the Gospel of John Jesus did His best to make the hearer's mind understand, the ear hears, and the eyes opened (Jesus didn't speak in parables in John) but in Isaiah God commanded Isaiah to do the opposite!
- Romans 11:1-10: Paul uses the quotation to explain how God hardened the non-elect while explaining that God did not reject his people in the rest of chapter 11.
- Acts 28:23-28: Similar to how Jesus used the passage in the Gospel of John, Paul also changed the meaning by using Isa 6:9-10 as explanation why after Paul tried his best to explain the gospel some STILL did not believe, adding a prophecy that the Gentiles will be more receptive (Acts 28:28).
My question is this: Why does God seem harsh in commanding Isaiah to "make the minds of these people dull .... otherwise [they will repent] and be healed"? Especially how the very prior verse Isa 6:8 is about mission?
Related questions:
- Why Jesus seemed to be doing the counter-productive act by speaking in parables in the Synoptic gospel, making quoting Isa 6:9-10 looks like a rationalization to be obscure?
- Did John and Luke do a wrong exegesis in John 12:37-43 and Acts 28:23-28 respectively, by changing the meaning of Isa 6:9-10 that they quoted?