Verses 30, 31. - Lay sick of a fever (κατέκειτο πυρέσσουσα). St. Luke (Luke 4:38) uses a stronger expression, "was holden with a great fever" (συνεχομένη πυρετῷ μεγάλῳ). There were marshes in that district; hence the prevalence of fevers of a malignant character. There is no mention of the wife of Peter by name in the New Testament. We may infer, from the fact that his wish's mother lived with him, that he was the head of the family. St. Paul (1 Corinthians 9:5) intimates that he was a married man, and that his wife accompanied him on his missionary tours. According to the testimony of Clement of Alexandria, and of Eusebius (3:30), she suffered martyrdom, and was led away to death in the sight of her husband, whose last words to her were, "Remember thou the Lord." St. Mark here tells us that Jesus came and took [Simon's wife's mother] by the hand, and raised her up. St. Luke (Luke 4:39) says that "he stood over her and rebuked the fever." Immediately the fever left her. The word "immediately" (εὐθέως), familiar as it is to St. Mark, is here omitted by the best authorities. But the omission is of no importance; for the fact that "the fever left her," and that she was at once strong enough to "minister to them," proves that it was not like an ordinary recovery from fever, which is wont to be slow and tedious.

1:29-39 Wherever Christ comes, he comes to do good. He cures, that we may minister to him, and to others who are his, and for his sake. Those kept from public ordinances by sickness or other real hinderances, may expect the Saviour's gracious presence; he will soothe their sorrows, and abate their pains. Observe how numerous the patients were. When others speed well with Christ, it should quicken us in seeking after him. Christ departed into a solitary place. Though he was in no danger of distraction, or of temptation to vain-glory, yet he retired. Those who have the most business in public, and of the best kind, must yet sometimes be alone with God.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.