Joseph Benson's Commentary of the Old and New Testaments - Luke 4:38-44
Luke 4:38-44. He entered into Simon’s house See notes on Matthew 8:14-17; and Mark 1:29-35. When the sun was setting And consequently the sabbath ended, which they considered as continuing from sunset to sunset; all that had any sick brought them Fully persuaded that he could and would heal them; which he accordingly did; he laid his hands on every one of them, and healed them Like the Pharisees, they seem to have questioned whether it was lawful for him to do cures on the sabbath... read more
Albert Barnes' Notes on the Whole Bible - Luke 4:31-44
See this explained in the notes at Mark 1:21-39. read more