Jesus called the people to him and said, ‘Listen to me, all of you, and understand. Nothing that goes into a man from outside can make him unclean; it is the things that come out of a man that make him unclean. If anyone has ears to hear, let him listen to this.’
When he had gone back into the house, away from the crowd, his disciples questioned him about the parable. He said to them, ‘Do you not understand either? Can you not see that whatever goes into a man from outside cannot make him unclean, because it does not go into his heart but through his stomach and passes out into the sewer?’ (Thus he pronounced all foods clean.) And he went on, ‘It is what comes out of a man that makes him unclean. For it is from within, from men’s hearts, that evil intentions emerge: fornication, theft, murder, adultery, avarice, malice, deceit, indecency, envy, slander, pride, folly. All these evil things come from within and make a man unclean.’
Source: Jerusalem Bible
Catechism of the Catholic Church
Jesus and Israel
574 From the beginning of Jesus’ public ministry, certain Pharisees and partisans of Herod together with priests and scribes agreed together to destroy him. Because of certain acts of his expelling demons, forgiving sins, healing on the sabbath day, his novel interpretation of the precepts of the Law regarding purity, and his familiarity with tax collectors and public sinners — some ill-intentioned persons suspected Jesus of demonic possession. He is accused of blasphemy and false prophecy, religious crimes which the Law punished with death by stoning.
575 Many of Jesus’ deeds and words constituted a “sign of contradiction”, but more so for the religious authorities in Jerusalem, whom the Gospel according to John often calls simply “the Jews”, than for the ordinary People of God. To be sure, Christ’s relations with the Pharisees were not exclusively polemical. Some Pharisees warn him of the danger he was courting; Jesus praises some of them, like the scribe of Mark 12:34, and dines several times at their homes.Jesus endorses some of the teachings imparted by this religious elite of God’s people: the resurrection of the dead,326 certain forms of piety (almsgiving, fasting and prayer), the custom of addressing God as Father, and the centrality of the commandment to love God and neighbor.
576 In the eyes of many in Israel, Jesus seems to be acting against essential institutions of the Chosen People:
– submission to the whole of the Law in its written commandments and, for the Pharisees, in the interpretation of oral tradition;
– the centrality of the Temple at Jerusalem as the holy place where God’s presence dwells in a special way;
– faith in the one God whose glory no man can share.
For the leader. Of David, the servant of the LORD.
Sin directs the heart of the wicked; their eyes are closed to the fear of God.
For they live with the delusion: their guilt will not be known and hated.
Empty and false are the words of their mouth; they have ceased to be wise and do good.
In their beds they hatch plots; they set out on a wicked way; they do not reject evil.
LORD, your love reaches to heaven; your fidelity, to the clouds.
Your justice is like the highest mountains; your judgments, like the mighty deep; all living creatures you sustain, LORD.
How precious is your love, O God! We take refuge in the shadow of your wings.
We feast on the rich food of your house; from your delightful stream you give us drink.
For with you is the fountain of life, and in your light we see light.
Continue your kindness toward your friends, your just defense of the honest heart.
Do not let the foot of the proud overtake me, nor the hand of the wicked disturb me.
There make the evildoers fall; thrust them down, never to rise.
Source: The New American Bible