I've heard some say that being in Christ means that we do not sin, because in Christ is no sin.
The error with this statement is that we are in Christ being born again.
So anyone who would say that they "don't measure up", but asserts that if we are in Christ, we do not sin, must not be in Christ.
I ask, are you then sinless? No sin in your life at all?
If the answer is yes, completely sinless, well, I've only come across one person ever who boldly asserted that. In that person, as I discussed this with them, and these internal contradictions were revealed, they became quite angry with me, to the point of telling lies attempting to discredit me. So much for that claim!
More often it's just alluded to, I hear people speaking/writing carefully, in such a way to allow others to "draw their own conclusions", in otherwords, making the claim, but with deniability.
One poster here I know that does that pretty much just fades into the woodwork when I start to question this, attempting to bring their claims into the light.
I don't like shadows. I don't like a lack of clarity. I like things to be clearly seen as they are, no hiding, plain, bold.
If the answer is no, not sinless, then this is tantamount to saying, not in Christ, and therefore, Biblically, not saved. Without the Spirit. And therefore not able to speak with understanding of the Scriptures, or of God.
So there it is. If you teach this, if you think this, there's an irreconcilable contradiction, unless, that is, you are sinless.
True understanding of the Bible will bring harmony with all passages, including those that teach our sanctification is ongoing throughout our lives.
Much love!