"Don't assume that I came to destroy the Law or the Prophets. I did not come to destroy but to fulfill.
References for Matthew 5:17
For I assure you: Until heaven and earth pass away, not the smallest letter or one stroke of a letter will pass from the law until all things are accomplished.
References for Matthew 5:18
Therefore, whoever breaks one of the least of these commandments and teaches people to do so will be called least in the kingdom of heaven. But whoever practices and teaches [these commandments] will be called great in the kingdom of heaven.
For I tell you, unless your righteousness surpasses that of the scribes and Pharisees, you will never enter the kingdom of heaven.