John Chrysostom

The Evangelist says that she was a Chananæan, to shew the power of Christ’s presence. For this nation, which had been driven out that they might not corrupt the Jews, now shewed themselves wiser than the Jews, leaving their own borders that they might go to Christ. And when she came to Him, she asked only for mercy, as it follows, She cried unto Him, saying, Have mercy on me, Lord, thou Son of David.