What did isaiah prophecy about?

Answer 1

AnswerIsaiah lived at a time when Assyria posed a clear and real threat to Jerusalem, and frequently warned of this. However, these warnings, which sometimes came in the form of oracles, can not really be called prophecies. As Assyria never actually captured Jerusalem, anything he might have said to that effect was not a prophecy as we understand the term.

Isaiah warned of the danger Jerusalem faced from Assyria, but did not actually prophesy that they would capture Jerusalem, which in any event they did not do. The nearest to such a prophecy is in verses 1:10-11, possibly a later addition: "As my hand hath found the kingdoms of the idols, and whose graven images did excel them of Jerusalem and of Samaria; Shall I not, as I have done unto Samaria and her idols, so do to Jerusalem and her idols?" If this is read as a prophecy of the capture of Jerusalem, then it must also be read as evidence that Isaiah could no more see inot the future than could those he was warning.

Answer 2

Isaiah prophesied about the downfall of Israel, how the Romans would take over Israel, and how Jesus would come and save the world from sin.