Romans 3:9-18 is not merely a description of those without the OT and those without a prophet sent from God to explain things in voice and text and time; but even of the Jews with a text, prophet, voice, and time; Even so these things were true of their mind and heart, and the fruit of their decisions:
Romans 3:Romans 3:9-18 (ESV)
What then? Are we Jews any better off? No, not at all. For we have already charged that all, both Jews and Greeks, are under the power of sin,  as it is written:
"None is righteous, no, not one;
 no one understands;
no one seeks for God.
 All have turned aside; together they have become worthless;
no one does good,
not even one."
 "Their throat is an open grave;
they use their tongues to deceive."
"The venom of asps is under their lips."
 "Their mouth is full of curses and bitterness."
 "Their feet are swift to shed blood;
 in their paths are ruin and misery,
 and the way of peace they have not known."
 "There is no fear of God before their eyes."