Albert Barnes on Matthew 8:16

When the even was come, etc. The fame of the miracles of Jesus would probably draw together a crowd, and those who had friends that were afflicted would bring them. All that were brought to him he healed. This was proof of two things: first, his great benevolence; and, secondly, of his Divine mission. He might have established the latter by miracles that would do no good. None of his miracles were performed, however, merely to make a display of power, unless the cursing of the barren fig-tree be an exception comp. Mk 11:11-14. This was on the evening of the sabbath, Mk 1:21-32. The Jews kept the sabbath from evening to evening, Lev 23:32. On the sabbath they would not even bring their sick to be healed, (Lk 13:14) but as soon as it was closed, on the evening of the same day, they came in multitudes to be cured.

Possessed with devils. Mt 4:24.

With his word. By his command; by a word.

(d) "brought unto him many" Mk 1:32