Mark 1:30

30 and the mother-in-law of Simon was lying fevered, and immediately they tell him about her,

Mark 1:30 Meaning and Commentary

Mark 1:30

But Simon's wife's mother lay sick of a fever
"A great fever", Luke says, ( Luke 4:38 ) ; a very violent one, which threatened with death, and must be very dangerous to an old person; (See Gill on Matthew 8:14),

And anon they tell him or her;
for it seems, that not as soon as he came into the house, but some time after, when he had sat awhile, and rested himself after his fatigue in preaching; they acquainted him with her case, and beseeched him to look upon her, and restore her: this was done, either by Simon and Andrew, or by some others of their friends that were in the house; who having either seen, or heard of his dispossessing the unclean spirit, might rightly conclude he had power to remove a fever.

Mark 1:30 In-Context

28 And the fame of him went forth immediately to all the region, round about, of Galilee.
29 And immediately, having come forth out of the synagogue, they went to the house of Simon and Andrew, with James and John,
30 and the mother-in-law of Simon was lying fevered, and immediately they tell him about her,
31 and having come near, he raised her up, having laid hold of her hand, and the fever left her immediately, and she was ministering to them.
32 And evening having come, when the sun did set, they brought unto him all who were ill, and who were demoniacs,
Young's Literal Translation is in the public domain.