Analysis of information sources in references of the Wikipedia article "Isaiah" in English language version.
Isaiah said to himself: I know him, i.e., Manasseh, that he will not accept whatever explanation that I will say to him to resolve my prophecies with the words of the Torah. And even if I say it to him, I will make him into an intentional transgressor since he will kill me anyway. Therefore, in order to escape, he uttered a divine name and was swallowed within a cedar tree. Manasseh's servants brought the cedar tree and sawed through it in order to kill him. When the saw reached to where his mouth was, Isaiah died. He died specifically at this point due to that which he said: "In the midst of a people of unclean lips, I dwell" (Isaiah 6:5). He was punished for referring to the Jewish people in a derogatory manner.
