13: Ye are the salt of the earth: but if the salt have lost his savour, wherewith shall it be salted? it is thenceforth good for nothing, but to be cast out, and to be trodden under foot of men. 14: Ye are the light of the world. A city that is set on an hill cannot be hid. 15: Neither do men light a candle, and put it under a bushel, but on a candlestick; and it giveth light unto all that are in the house. 16: Let your light so shine before men, that they may see your good works, and glorify your Father which is in heaven. 17: Think not that I am come to destroy the law, or the prophets: I am not come to destroy, but to fulfill. 18: For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled. 19: Whosoever therefore shall break one of these least commandments, and shall teach men so, he shall be called the least in the kingdom of heaven: but whosoever shall do and teach them, the same shall be called great in the kingdom of heaven. 20: For I say unto you, That except your righteousness shall exceed the righteousness of the scribes and Pharisees, ye shall in no case enter into the kingdom of heaven. 21: Ye have heard that it was said by them of old time, Thou shalt not kill; and whosoever shall kill shall be in danger of the judgment: 22: But I say unto you, That whosoever is angry with his brother without a cause shall be in danger of the judgment: and whosoever shall say to his brother, Raca, shall be in danger of the council: but whosoever shall say, Thou fool, shall be in danger of hell fire. 23: Therefore if thou bring thy gift to the altar, and there rememberest that thy brother hath ought against thee; 24: Leave there thy gift before the altar, and go thy way; first be reconciled to thy brother, and then come and offer thy gift. 25: Agree with thine adversary quickly, whiles thou art in the way with him; lest at any time the adversary deliver thee to the judge, and the judge deliver thee to the officer, and thou be cast into prison. 26: Verily I say unto thee, Thou shalt by no means come out thence, till thou hast paid the uttermost farthing. 27: Ye have heard that it was said by them of old time, Thou shalt not commit adultery: 28: But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart. 29: And if thy right eye offend thee, pluck it out, and cast it from thee: for it is profitable for thee that one of thy members should perish, and not that thy whole body should be cast into hell. 30: And if thy right hand offend thee, cut if off, and cast it from thee: for it is profitable for thee that one of thy members should perish, and not that thy whole body should be cast into hell. 31: It hath been said, Whosoever shall put away his wife, let him give her a writing of divorcement: 32: But I say unto you, That whosoever shall put away his wife, saving for the cause of fornication, causeth her to commit adultery: and whosoever shall marry her that is divorced committeth adultery. 33: Again, ye have heard that it hath been said by them of old time, Thou shalt not forswear thyself, but shalt perform unto the Lord thine oaths: 34: But I say unto you, Swear not at all; neither by heaven; for it is God's throne: 35: Nor by the earth; for it is his footstool: neither by Jerusalem; for it is the city of the great King. 36: Neither shalt thou swear by thy head, because thou canst not make one hair white or black. 37: But let your communication be, Yea, yea; Nay, nay: for whatsoever is more than these cometh of evil. 38: Ye have heard that it hath been said, An eye for an eye, and a tooth for a tooth: 39: But I say unto you, That ye resist not evil: but whosoever shall smite thee on thy right cheek, turn to him the other also. 40: And if any man will sue thee at the law, and take away thy coat, let him have thy cloke also. 41: And whosoever shall compel thee to go a mile, go with him twain. 42: Give to him that asketh thee, and from him that would borrow of thee turn not thou away. 43: Ye have heard that it hath been said, Thou shalt love thy neighbour, and hate thine enemy. 44: But I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you; 45: That ye may be the children of your Father which is in heaven: for he maketh his sun to rise on the evil and on the good, and sendeth rain on the just and on the unjust. 46: For if ye love them which love you, what reward have ye? do not even the publicans the same? 47: And if ye salute your brethren only, what do ye more than others? do not even the publicans so? 48: Be ye therefore perfect, even as your Father which is in heaven is perfect.
Because Christ is addressing Israel he can talk about salt being worthless and thrown out to be trodden under the foot of men. (Christ could never say this about any christian. christians are never castaway) In AD70 When the Romans marched into Jerusalem and 1,100,000 Jews were killed, then they knew what Christ meant by being thrown out – only to be trodden under the foot of men. Israel was to be a light to the Gentiles but if their light is hidden then darkness falls on the whole world. So Christ says do not let your candle be covered by the kitchen grain bowl but let the light shine out to all in the house, so that they might see the light and glorify God. Next Christ says that he has not come to destroy the Law and the Prophets but he has come to fulfil them and not one bit of OT will pass away until Christ has fulfilled all prophecy. Christ states clearly that those who keep the Mosaic Law will be called great in the kingdom of heaven. In this sermon Christ exposes the shallowness of the rabbinical theology. They believe that sin is only sin in the act, but Christ says no, sin is sin when the sinner decides to sin in his heart and before the act. And so the standard of righteousness of the Mosaic Law extends to the inner man and especially his motives. The Lord then goes on to explain the significance of this principle - in murder and hatred, adultery and lust, touching and lusting, false accusations for the purpose of fulfilling lust, oaths and swearing and in fair judgment and compulsion.