I suppose there comes a time when we should just know better.
I'd rather err on the side of mercy, although, there are times when God says, "Enough."
It makes me think that we should be so diligent to guard our hearts. God is judging our hearts, not so much our actions..... Man looks on the outside but, God judges the heart.
Don't let a root of bitterness be in our heart. Don't stumble over anger. We can be angry but, sin not.