Matthew 5:20 in the King James Version
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.
Context
19 Therefore, whoever shall break one of these least commandments and teach others to do so, shall be called least in the Kingdom of Heaven; but whoever shall do and teach them shall be called great in the Kingdom of Heaven.
20 For I tell you that unless your righteousness exceeds that of the scribes and Pharisees, there is no way you will enter into the Kingdom of Heaven.
21 “You have heard that it was said to the ancient ones, ‘You shall not murder;’ and ‘Whoever murders will be in danger of the judgment.’