Then Jesus answered her, “O woman, great is your faith! Let it be done for you as you desire.” And her daughter was healed instantly.
28. Great is thy faith. He first applauds the woman’s faith, and next declares, that on account of her faith he grants her prayer. The greatness of her faith appeared chiefly in this respect, that by the aid of nothing more than a feeble spark of doctrine, she not only recognized the actual office of Christ, and ascribed to him heavenly power, but pursued her...
We have here that famous story of Christ's casting the devil out of the woman of Canaan's daughter; it has something in it singular and very surprising, and which looks favourably upon the poor Gentiles, and is an earnest of the mercy which Christ had in store for them. Here is a gleam of that light which was to lighten the Gentiles, Luk 2:32.
Commenting on Matthew 15:21-28
Then Jesus answered, and said unto her,.... As one surprised at the strength of her faith, and the clearness and justness of her pious reasoning; and not concealing himself, and the designs of grace, any longer from her, breaks out in great admiration of her, saying, O woman, great is thy faith!