When Jesus said: "I have not come to destroy the law but to fulfill", the same word is used when he received the sponge fulfilled with vinegar. As the sponge is dry and thirsty for some liquid and has to be filled up, the same way the Law of God is thirsty for your righteousness. And Jesus said: I will fill the thirst of the see more Law with My righteousness in spite of you so that the Law will not pursue you anymore to be perfect, holy and loving. Jesus made you perfect (Heb 10:14), holy (2Cor 5:21) and loving (Gal 5:21-22).