Matthew 17:23 And they shall kill him, and the third day he shall be raised again. And they were exceeding sorry.
When they heard that Jesus would be killed they were sorry. They didn’t probably catch or pay attention to the fact that He would rise again. Or maybe they just didn’t believe that He would literally be alive again. It is hard to believe that He will conquer death literally.
They also didn’t understand after all this time that His dying was how they were going to live. He would conquer death and the grave. He would conquer sin. He would give them eternal life which He had talked about so many times.
They were sorry and I understand. I often do not catch the real import or teaching of Scripture. I hear one thing and do not pay attention to the rest of the story!