Romans 6:15. What then? shall we sin, because we are not under the law, but under grace? God forbid.
There is a movement, present today, pushing that which Paul says God forbids. I will call it the grace movement. Grace does allow us liberty, but at a cost. I think in some ways, it was easier in theory to live under the law. You just had to obey a lot of commandments. Your heart did not necessarily have to be in it. The Pharisees were a case and point. Living under grace, in the New Testament, is a lot higher calling and much more difficult. For someone to maintain the fruit of the Spirit in their heart, all day long, takes a lot of effort. It really requires a supernatural inspiration to make it happen.
When Paul asks the question, “shall we sin?”, it is pretty apparent there is a higher standard for the Christian. We are to live holy because God is holy. At the same time, we need to not just obey the letter of the law, we must obey the spirit of it, as well. Having love, joy, peace, gentleness, meekness, temperance, goodness, and the other fruit of the Spirit requires a heart that is right. The Christian needs to worship God in spirit and in truth. The Christian needs to love God with his whole spirit, soul, body, and heart. There really is nothing left of the Christian that can be left out when we live under grace.
So, the whole premise of the modern day grace movement is a bunch of junk. Thinking you can live anyway you please, so that “grace may abound”, is not right. God forbids it. The reality of it is, that it is a much harder task than living under the law. However, the Christian has more supernatural tools than the Old Testament saint. First and foremost, he has the Holy Ghost of God living inside him. Will you let Him have control over you and let him help you live under grace? It is the only way it is going to happen.