34 Hearing that Jesus had silenced the Sadducees, the Pharisees got together. 35 One of them, an expert in the law, tested him with this question: 36 "Teacher, which is the greatest commandment in the Law?" 37 Jesus replied: "'Love the Lord your God with all your heart and with all your soul and with all your mind.' 38 This is the first and greatest commandment. 39 And the second is like it: 'Love your neighbor as yourself.' 40 All the Law and the Prophets hang on these two commandments."
I know what you mean by "you gotta do it this way" but what about obedience to Christ? If you're going to love God with all your heart, soul and mind what better way then trying to show obedience? Now I'm not saying that we need to be perfect in the eyes of the old law, because that is not possible. What I'm trying to say is that as your relationship with God grows it is only natural that what is important to God becomes important to you. If you do not surrender all areas of your life to God you cannot continue to grow and produce fruit.
23 Someone asked him, "Lord, are only a few people going to be saved?" He said to them, 24 "Make every effort to enter through the narrow door, because many, I tell you, will try to enter and will not be able to. 25 Once the owner of the house gets up and closes the door, you will stand outside knocking and pleading, 'Sir, open the door for us.' "But he will answer, 'I don't know you or where you come from.' 26 "Then you will say, 'We ate and drank with you, and you taught in our streets.' 27 "But he will reply, 'I don't know you or where you come from. Away from me, all you evildoers!
47 "As for the person who hears my words but does not keep them, I do not judge him. For I did not come to judge the world, but to save it. 48 There is a judge for the one who rejects me and does not accept my words; that very word which I spoke will condemn him at the last day. 49 For I did not speak of my own accord, but the Father who sent me commanded me what to say and how to say it.
Only God truly knows our hearts and our minds and no matter how many laws we don't break we are all still sinners who need Jesus. While God has given us grace, I think Jesus makes it clear that it is not to be taken for granted.