There is no doubt a Christian can live and should live a holy life; that his life should be considerably different from those that are in the world, so different that the world should sit up and take notice that this man is a Christian. I believe that.I have never said that I live a sinless life. Nonetheless what I said in my previous post is true and you said nothing which proves what I said is not true.
That is what is theoretically possible; not sinlessness.
And if you have attained that in your life, then God bless you for it.
Everyone of us should strive to live holy lives, separated from the world.
BTW, that word "holy" means "set apart." It has the connotation of being set apart from the world, not only from sin. It also has the meaning of being set apart for God's service.
But a holy life is not a sinless life.
The topic of this thread is "theoretical sinlessness."
In the light of Scripture:
(1Jn 1:8) If we say that we have no sin, we deceive ourselves, and the truth is not in us.
(1Jn 1:10) If we say that we have not sinned, we make him a liar, and his word is not in us.
It is impossible to live a sinless life, even theoretically.