Common sense: why would a tree designed to bear fruit wait to do it in three years, without having something holding it back? Why would Christ be held back in any endeavor He claims as His will? For who could possibly claim to even hinder Christ's course of action? And if it is simply a bump in the road to you, how would that be able to be described as sin unconfessed? If sin is not a wrong doing and is a wrong being to God, how can the Scripture that says, "We cannot serve two Masters" be sidetracked at this fork in the road?
If I am sinning and still in Gods graces detaching myself from the need to a forward motion and a confessional conscience, how then is this any different to your original problem of being enslaved in sin once again destined to hell? If I am a sin being, how am I to mask this from the one who knows it, has answered it, and is waiting for you to apply yourself to His plan? God hasn't said, "You know something the plan needs an amendment, let's put grace in front of the work of the cross and the resurrection. This isn't about the do's and don'ts, it is much deeper than that! it's about the "whom" we belong to.
"If anyone wills to do His will, he shall know concerning the doctrine." John 7:17. Intellectual pursuit must stop and obedience must begin before understanding is given. Don't risk going from God uncovering your spirit of self-vindication and God creating a crisis of sensitivity in you over things you have never even thought of before, to an attempt to evade it- leaving behind a religious imposter.
God is calling us to examine things that at one time we shrugged our shoulders about. If we refuse to obey Him, this is why you have not grown thru it. As Jesus said, "First....go...." Even at the risk of being thought of as being fanatical, we must obey what God tells us. Just make sure it's God, by which spirit you rest in.