You can be forgiven for sin and made blameless, but all sin will be judged and ultimately destroyed. God does not compromise on sin - He is an all-consuming, purifying fire. Eternal life is the gold that is purified by the fire, but all impurities will be completely burned away.
Rule of thumb: If you truly fear God's judgment and merely desire to do good and be free of sin, then you're probably in a good spot. If you don't care at all or you tell yourself that God isn't real and/or He won't judge you... may He have mercy on your soul.