21“You have heard that it was said to the people long ago, ‘You shall not murder,a and anyone who murders will be subject to judgment.’ 22But I tell you that anyone who is angry with a brother or sisterb c will be subject to judgment. Again, anyone who says to a brother or sister, ‘Raca,’d is answerable to the court. And anyone who says, ‘You fool!’ will be in danger of the fire of hell.
23“Therefore, if you are offering your gift at the altar and there remember that your brother or sister has something against you, 24leave your gift there in front of the altar. First go and be reconciled to them; then come and offer your gift.
25“Settle matters quickly with your adversary who is taking you to court. Do it while you are still together on the way, or your adversary may hand you over to the judge, and the judge may hand you over to the officer, and you may be thrown into prison. 26Truly I tell you, you will not get out until you have paid the last penny.
27“You have heard that it was said, ‘You shall not commit adultery.’e 28But I tell you that anyone who looks at a woman lustfully has already committed adultery with her in his heart.
◄ James 2:10 ►
For whoever keeps the whole law and yet stumbles at just one point is guilty of breaking all of it
When Jesus stood before the prostitute and said the one without sin cast the first stone, he meant all of us. We are sinners all, and as such we should gently try to help our neighbors without judging them as below us because we think we never did anything as bad as them, this only brings more pain, just like what Christ was trying to avoid by letting them stone the whore.