No doubt a reference to Roman’s 3:23. A few verses earlier Paul also wrote,
as it is written: "There is no one just, not one, there is no one who understands, there is no one who seeks God. All have gone astray; all alike are worthless; there is not one who does good, (there is not) even one. (Romans 3:10-12)
OK, so Paul said it. All have sinnned. Notice however, that it says “As it is written”. Paul was actually quoting Psalm 14…
Fools say in their hearts, “There is no God.” Their deeds are loathsome and corrupt; not one does what is right. The LORD looks down from heaven upon the human race, To see if even one is wise, if even one seeks God. All have gone astray; all alike are perverse. Not one does what is right, not even one. (Psalm 14:1-3)
This would seem to indicate that you might be correct, except that verse 5 states,
They have good reason, then, to fear; God is with the company of the just. (Psalm 14:5)
So there are sinners, loathsome and corrup, all of whome have gone astray, and there is the “Company of the just”!
So Paul was not talking about all menas sinners. In his quote of Pslam 14, we see that he was talking about all sinners and must necessarily be excluding the “Company of the just”.
-Tim-