Mark 9:14-29
And when they came to the disciples, they saw a great crowd around them, and scribes arguing with them. And immediately all the crowd, when they saw him, were greatly amazed and ran up to him and greeted him. And he asked them, “What are you arguing about with them?” And someone from the crowd answered him, “Teacher, I brought my son to you, for he has a spirit that makes him mute. And whenever it seizes him, it throws him down, and he foams and grinds his teeth and becomes rigid. So I asked your disciples to cast it out, and they were not able.” And he answered them, “O faithless generation, how long am I to be with you? How long am I to bear with you? Bring him to me.” And they brought the boy to him. And when the spirit saw him, immediately it convulsed the boy, and he fell on the ground and rolled about, foaming at the mouth. And Jesus asked his father, “How long has this been happening to him?” And he said, “From childhood. And it has often cast him into fire and into water, to destroy him. But if you can do anything, have compassion on us and help us.” And Jesus said to him, “‘If you can’! All things are possible for one who believes.” Immediately the father of the child cried out and said, “I believe; help my unbelief!” And when Jesus saw that a crowd came running together, he rebuked the unclean spirit, saying to it, “You mute and deaf spirit, I command you, come out of him and never enter him again.” And after crying out and convulsing him terribly, it came out, and the boy was like a corpse, so that most of them said, “He is dead.” But Jesus took him by the hand and lifted him up, and he arose. And when he had entered the house, his disciples asked him privately, “Why could we not cast it out?” And he said to them, “This kind cannot be driven out by anything but prayer.”

Mark 7:24-37
And from there Jesus arose and went away to the region of Tyre and Sidon. And he entered a house and did not want anyone to know, yet he could not be hidden. But immediately a woman whose little daughter had an unclean spirit heard of him and came and fell down at his feet. Now the woman was a Gentile, a Syrophoenician by birth. And she begged him to cast the demon out of her daughter. And he said to her, “Let the children be fed first, for it is not right to take the children's bread and throw it to the dogs.” But she answered him, “Yes, Lord; yet even the dogs under the table eat the children's crumbs.” And he said to her, “For this statement you may go your way; the demon has left your daughter.” And she went home and found the child lying in bed and the demon gone.

Then he returned from the region of Tyre and went through Sidon to the Sea of Galilee, in the region of the Decapolis. And they brought to him a man who was deaf and had a speech impediment, and they begged him to lay his hand on him. And taking him aside from the crowd privately, he put his fingers into his ears, and after spitting touched his tongue. And looking up to heaven, he sighed and said to him, “Ephphatha,” that is, “Be opened.” And his ears were opened, his tongue was released, and he spoke plainly. And Jesus charged them to tell no one. But the more he charged them, the more zealously they proclaimed it. And they were astonished beyond measure, saying, “He has done all things well. He even makes the deaf hear and the mute speak.”

Mark 7:14-23
And he called the people to him again and said to them, “Hear me, all of you, and understand: There is nothing outside a person that by going into him can defile him, but the things that come out of a person are what defile him.” And when he had entered the house and left the people, his disciples asked him about the parable. And he said to them, “Then are you also without understanding? Do you not see that whatever goes into a person from outside cannot defile him, since it enters not his heart but his stomach, and is expelled?” (Thus he declared all foods clean.) And he said, “What comes out of a person is what defiles him. For from within, out of the heart of man, come evil thoughts, sexual immorality, theft, murder, adultery, coveting, wickedness, deceit, sensuality, envy, slander, pride, foolishness. All these evil things come from within, and they defile a person.”