Salt and Light
You are like salt for everyone on earth. But if salt no longer tasted like salt, how can it make food salty? All it is good for is to be thrown out and walked on.
You are like light for the whole world. A city built on top of a hill cannot be hidden, and no one would light a lamp and put it under a clay pot. A lamp is placed on a lamp stand, where it can give light to everyone in the house. Make your light shine, so that others will see the good that you do and will praise your Father in heaven.
The Law of Moses
Don't suppose that I came to do away with the Law and the Prophets. I did not come to do away with them, but to give them their full meaning. Heaven and earth may disappear. But I promise you that not even a period or comma will ever disappear from the Law. Everything written in it must happen.
If you reject even the least important command in the Law and teach others to do the same, you will be the least important person in the kingdom of heaven. But if you obey and teach others its command, you will have an important place in the kingdom. You must obey God's commands better than the Pharisees and the teachers of the Law obey them. If you don't, I promise you that you will never get into the kingdom of heaven.
Anger
You know that our ancestors were told, "Do not murder" and "A murderer must be brought to trial." But I promise you that if you are angry with someone, you will have to stand trial. If you call someone a fool, you will be taken to court. And if you say that someone is worthless, you will be in danger of the fires of hell.
So if you are about to place your gift on the altar and remember that someone is angry with you, leave your gift there in front of the altar. Make peace with that person, then come back and offer your gift to God.
Before you are dragged into court, make friends with the person who has accused you of doing wrong. If you don't, you will be handed over to the judge and then to the officer who will put you in jail. I promise you that you will not get out until you have paid the last cent you owe.
Marriage
You know the commandment which says, "Be faithful in marriage." But I tell you that if you look at another woman and want her, you are already unfaithful in your thoughts. If your right eye causes you to sin, poke it out and throw it away. It is better to lose one part of your body, than for your whole body to end up in hell. If your right hand causes you to sin, chop it off and throw it away! It is better to lose one part of your body, than for your whole body to be thrown into hell.
Divorce
31 You have been taught that a man who divorces his wife must write out divorce papers for her. 32 But I tell you not to divorce your wife unless she has committed some terrible sexual sin. If you divorce her, you will cause her to be unfaithful, just as any man who marries her is guilty of taking another man's wife.
Promises
You know that our ancestors were told, "Don't use the Lord's name to make a promise unless you are going to keep it." But I tell you not to swear by anything when you make a promise! Heaven is God's throne, so don't swear by heaven. The earth is God's footstool, so don't swear by the earth. Jerusalem is the city of the great king, so don't swear by it. Don't swear by your own head. You cannot make one hair white or black. When you make a promise, say only "Yes" or "No." Anything else comes from the devil.