By the statement given and what you said it made it to sound as if we are allowed to keep sinning.
Nowhere in the bible, especially not by Paul, does the bible say that.
It expressly says not to continue sinning over and over again, and clearly warns if we do !!!
Paul nowhere gave permission for sinning to continue, as he said if you do that is still your master that will lead to eternal death.
Walking by the flesh (sinfulness) keeps one enmity to God, that is what Paul said.
Romans 3:9-19, and surrounding text. Galatians 3:10-14, Ephesians 2:1-10 All state all humans sin, so matter what, and it's only by Christ's divine sacrifice you are saved. What is it to argue, "we will not sin" or "how can we go on sinning", when we are saddled in original sin in every thought, every word, every work? Nothing fixes this, but Grace, not your choice, not your understanding. Truly you must admit you sin, you will continue to sin, not live some illusory sinless life.