Isaiah - Is the Son of Man Coming?

Jesus is talking about impending current doom on jerusalem. Jesus quotes prophets whose messages will be about perseverance. He reiterates this essential message, you are going to have to persevere through these tough times. There will be no escaping it. And and there's a lot of weird stuff re right brent, like a sign of the son of man in heaven,. angel coming with trumpet and power and glory and and and gathering the elect from the four windslike that's weird. I wonder where all that language comes from? It's got to be in the text. Like this whole section here is full of jesus using multiple prophetic images from the nevahim.