Nobody is saying grace gives us permission to sin. Nobody is saying not to try to please God. Nobody is saying sin all you want and you'll be ok...What we are saying is this:
Isaiah 64:6
But we are all like an unclean thing,
And all our righteousnesses are like filthy rags;
We all fade as a leaf,
And our iniquities, like the wind,
Have taken us away.
You can try all you want, it's not going to get you anywhere!
We should pray to become more righteous, but, that is not done by THINKING we are to keep the Law, that is, the commandments of Moses. We become more righteous, that is, 'right standing with God,' by accepting His grace, His mercy, and, His Love for us as we go through our lives , led by His Spirit in us and, sure, you will OBEY the Law too
I believe, the person who was thrown out from the wedding--in Jesus' parable in a couple of the Gospel books-- and made to go where there is 'weeping and gnashing of teeth,' came to the feast without being in right standing with God. The man did not obey what was to have been said is the wear for the wedding, and, I believe, this disobedience, simply, meant that the man was disobeying God. God is soooo against disobedience by us, His children, 'that,' and, complaining and murmuring, God HATES that !!! The Lord leads. YOU go where He leads YOU in your life, period
And, let me remind you, YOU have The Son , so, you are freeeeeeeeeeeeeeee , so, go, in the Spirit, His way for you, KNOWING it is good, it is goodness, it is not just the BEST way for your life, it is the blessed way of your life. Oh, sure, YOU can go your own way, but, that would be a secular choice, and, certainly, NOT sweet music to God's ears
So, RESIST the Devil, singing in your ear," pa-DA-DA-up-Ah, pa-da-DA-Up, AH , YOU CAN GO YOUR OWN WAY, go your own way."
Even, IF that way from God is putting you into a 'rainy day.'
For 'sunny' is around the corner