“Faith may be strongest when assurance is weakest: the woman of Canaan had no assurance, but she had glorious faith” (Thomas Watson).
Really, Watson? It certainly looks certain that the woman of Canaan was certain about certain propositions. That’s why Christ commended her.
“And going out from there, Jesus withdrew to the parts of Tyre and Sidon. And, behold, a woman of Canaan coming forth from those borders cried out to Him, saying, Have pity on me, Lord, Son of David! My daughter is badly demon-possessed. But He did not answer her a word. And coming near, His disciples asked Him, saying, Send her away, for she cries out after us. But answering, He said, I was not sent except to the lost sheep of the house of Israel. But coming, she worshiped Him, saying, Lord, help me! But answering, He said, It is not good to take the bread of the children to throw it to the little dogs. But she said, Yes, Lord; for even the little dogs eat of the crumbs falling from the table of their lords. Then answering, Jesus said to her, O woman, great is your faith; let it be to you as you desire. And her daughter was healed from that hour” (Matthew 15:21-28).
Agrammatos 