Just tell us how one makes the grace of God a license to sin so we'll be sure not to do that, and so we'll know that's not what you're teaching. That's fair. Just focus on that single thing. That's all you need to do. Are you up to it?
By not believing in it. By believing your own version of "truth", instead of accepting Biblical truth.
That's how.
Here is how God's truth of grace IS NOT a "license to sin" (another one of those fictional debates - there is no such thing as a "license to sin").
Anyway, here is the reality:
1 John 3:1-3 KJV
1) Behold, what manner of love the Father hath bestowed upon us, that we should be called the sons of God: therefore the world knoweth us not, because it knew him not.
2) Beloved, now are we the sons of God, and it doth not yet appear what we shall be:
but we know that, when he shall appear, we shall be like him; for we shall see him as he is.
3)
And every man that hath this hope in him purifieth himself, even as he is pure.
You see how God's grace is in fact the way we purify ourselves.
Much love!