Another one that I heard commonly growing up. I have had discussions with people as well since learning what the Bible says that have repeated similar to the church point of view. The problem is that the church view used here is taking a quote from Paul in Romans 3 out of context. Paul is referencing the Psalms (14 and 53) when he states none are righteous. The whole book of Romans Paul is talking about the difference of being righteous and unrighteous. In chapter 2 he states that "it is not the hearers of the law (God's Torah) that will be justified, but the doers of the law", and then goes onto condemn those that are practicing the law without the heart for God, boasting in what they are doing. Chapter 3 he points out this is the same as unrighteousness. Throughout the letter he encourages those reading to not sin, and points out that how we know what is sin is by the law.
This is part 1, I have another comic coming up that will cover a little more of the rebuttal here.