One more verse

But we are all as an unclean thing, and all our righteousnesses are as filthy rags; and we do all fade as a leaf; and our iniquities, like the wind, have taken us away. —Isaiah 64:6

Emphasis mine, again. I think it's easy to forget that nothing we do can make us right with God, easy to forget that as Christians we're supposed to bring glory to God, and easy to forget that both strutting around saying "Look at me, I match God's word perfectly" and slouching around saying "God's grace saves us, therefore we can do what we like" are not glorifying God. That's right, neither of them.

Rather, we should highlight God's grace and mercy to sinners without assuming that God's grace and mercy gives us license to sin whenever and however we desire, without taking God's grace and mercy for granted.