'Severe' in the Bible

In the thirty-ninth year of his reign Asa developed a disease in his feet. His disease was severe, yet even in his illness he did not seek the Lord, but [relied only on] the physicians.

and you will suffer a severe illness, an intestinal disease, until your intestines come out because of the sickness, day after day.’”

Now it came about in the course of time, at the end of two years, that his intestines came out because of his disease and he died in excruciating pain. And his people did not make a funeral fire to honor him, like the fire for his fathers.