I am surprised you would say this. What OT scripture was quoted most often by Jesus?
Matthew 9:10 While Jesus was having dinner at Matthew's house, many tax collectors and "sinners" came and ate with him and his disciples. 11 When the Pharisees saw this, they asked his disciples, "Why does your teacher eat with tax collectors and 'sinners'?" 12 On hearing this, Jesus said, "It is not the healthy who need a doctor, but the sick. 13 But go and learn what this means: 'I desire mercy, not sacrifice.' For I have not come to call the righteous, but sinners." NIV
Matthew 12:7 If you had known what these words mean, 'I desire mercy, not sacrifice,' you would not have condemned the innocent. NIV
Then why didn't Jesus say that they would know that we are his disciples by our JUSTICE??? Jesus died so we wouldn't have to get what we deserve!