Albert Barnes
In Decapolis - See the notes at Matthew 4:25.
How great things ... - This was the natural expression of right feeling at being cured of such a calamity. So the desire of sinners freed from sin is to honor Jesus, and to invite the world to participate in the same salvation, and to join them in doing honor to the Son of God. Compare Psalms 66:16.
Something should be given her to eat - “He had raised her by extraordinary power, but he willed that she should be sustained by ordinary means.” He also in this gave full evidence that she was really restored to life and health. The changes were great, sudden, and certain. There could be no illusion. So, when the Saviour had risen, he gave evidence of his own resurrection by eating with his disciples, John 21:1-13.