Theophylact of Ohrid — as excerpted in the Catena Aurea on Mark 1:32-34

“Because the multitude thought that it was not lawful to heal on the sabbath day, they waited for the evening, to bring those who were to be healed to Jesus. Wherefore it is said, And at even, when the sun had set. There follows, and he healed many that were vexed with divers diseases.”