"After he had left the crowd and entered the house, his disciples asked him about this parable. 'Are you so dull?' he asked. 'Don't you see that nothing that enters a man from the outside can make him "unclean"? For it doesn't go into his heart but into his stomach, and then out of his body.' (In saying this, Jesus declared all foods "clean".)" NIV translation
We see that the disciples still did not understand the freedom that they had obtained through their faith in Jesus. They asked Jesus what he had meant and He explained that things that enter our body are only temporary but what is in the heart lasts forever.
"He went on: 'What comes out of a man is what makes him "unclean." For from within, out of men's hearts, come evil thoughts, sexual immorality, theft, murder, adultery, greed, malice, deceit, lewdness, envy, slander, arrogance and folly. All these evils come from inside and make a man "unclean."'" NIV translation
Jesus went on to explain that the sin is not what is taken in as there is freedom in our faith. The sin is the attitudes and actions that come out which are not Christlike.
"Jesus left that place and went to the vicinity of Tyre. He entered a house and did not want anyone to know it; yet he could not keep his presence secret. In fact, as soon as she heard about him, a woman whose little daughter was possessed by an evil spirit came and fell at his feet. The woman was a Greek, born in Syrian Phoenicia. She begged Jesus to drive the demon out of her daughter." NIV translation
Jesus left and went to another area hoping for a little time of rest but people found out and a woman came to Him in hopes of freeing her daughter from a demon. We see that this woman was not a Jew as she was a Greek.
"'First let the children eat all they want,' he told her, 'for it is not right to take the children's bread and toss it to their dogs.' 'Yes, Lord,' she replied, 'but even the dogs under the table eat the children's crumbs.' Then he told her, 'For such a reply, you may go; the demon has left your daughter.' She went home and found her child lying on the bed, and the demon gone." NIV translation
We see an interesting conversation between Jesus and this woman. He basically tells her that He has come for the Jews. Her answer is that He does not have to take away from them to meet her need as well. She saw the fact that Jesus came for all men and He commended her for it and drove the demon from her daughter.
We notice that it only required a "crumb" of faith for it to be done and must ask ourselves if we have even a "crumb" ourselves.