Sea of Galilee - That is, the Lake of Gennesaret. For an account of the principal diseases mentioned here, see the notes at Matthew 4:24.
Maimed - Those to whom a hand or foot was wanting. See Matthew 18:8. To cure them - that is, to restore a hand or foot - was a direct act of creative power. It is no wonder, therefore, that the people wondered.
And they glorified the God of Israel - To glorify here means to praise; to acknowledge his power and goodness. The God of Israel was the God that the Israelites or Jews worshipped.