This makes sense, because the purpose of Christianity is having the law written on the heart. So everything you do shouldn't be because you are forced to or obligated to, but because you naturally want to do it.
Are there scriptures mentioning the consequences of doing it out of a wrong heart?
Sure:
1 Cor 11:
20 When you meet together, you are not really interested in the Lord’s Supper. 21 For some of you hurry to eat your own meal without sharing with others. As a result, some go hungry while others get drunk. 22 What? Don’t you have your own homes for eating and drinking? Or do you really want to disgrace God’s church and shame the poor? What am I supposed to say? Do you want me to praise you? Well, I certainly will not praise you for this!
23 For I pass on to you what I received from the Lord himself. On the night when he was betrayed, the Lord Jesus took some bread 24 and gave thanks to God for it. Then he broke it in pieces and said, “This is my body, which is given for you. Do this in remembrance of me.”25 In the same way, he took the cup of wine after supper, saying, “This cup is the new covenant between God and his people—an agreement confirmed with my blood. Do this in remembrance of me as often as you drink it.” 26 For every time you eat this bread and drink this cup, you are announcing the Lord’s death until he comes again.
27 So anyone who eats this bread or drinks this cup of the Lord unworthily is guilty of sinning against the body and blood of the Lord. 28 That is why you should examine yourself before eating the bread and drinking the cup. 29 For if you eat the bread or drink the cup without honoring the body of Christ, you are eating and drinking God’s judgment upon yourself. 30 That is why many of you are weak and sick and some have even died.
31 But if we would examine ourselves, we would not be judged by God in this way. 32 Yet when we are judged by the Lord, we are being disciplined so that we will not be condemned along with the world.
33 So, my dear brothers and sisters, when you gather for the Lord’s Supper, wait for each other. 34 If you are really hungry, eat at home so you won’t bring judgment upon yourselves when you meet together. I’ll give you instructions about the other matters after I arrive.
Yeah, they were first known as "the Way". Indeed, the verse in most Bibles do present the option but now I know that it is an optional understanding, not a definite one.
True... true..
I always viewed the concept as the Law written on the heart and the works are naturally produced as a result of the faith, similar to what you mentioned at the beginning of your post.
Yes. I remember when my wife and I first gave our lives to Jesus. Before we had made it a habit to go out on Friday nights and live it up -- drinking. Without having read anything in the Bible... we just naturally found ourselves not wanting to do it anymore. Wasn't a verbal law, it was God writing His law in our hearts. Or, I use to cuss all the time with no regrets... and after, I just didn't like to do it anymore. Not that I heard anything... just God writing on my heart.