When we find ourselves in life, there are many given choices that we would have to make every day. And whether we are purposeful about those decisions or just kinda make them, we are ultimately revealing our true priorities in the way that we interact with this thing we call life.
So, what does that mean when we choose to sin in our lives. None of us would consciously create a plan that involved a terrible terrible sin once a week because (I hope) not one of us is that mixed up in their priorities for that to so openly and honestly reject God.
But since our subconscious decisions reveal a lot about our heart and our priorities, what does it mean when we rather make an effort to sin.
Simply, it reveals that we delight more in that sin at that moment than in pleasing God. We have decided that our personal pleasure is more important than obedience to God.
Obviously, I don't want to depress you all too much here; there at least is the point where we are specifically trying our best to serve the Lord, but we all will still have moments of weakness, where we sin. We are after all, only human.
But we must realize what that sin actually shows about us within that point of time, and know that there is no such thing as an "accidental" sin. And since every sin reflects an attitude in our hearts of putting something other than God as more valuable in our lives. I think that there indeed can be nothing to be said about "little" sins either.