As it is written; viz. in several places of Scripture, which he quotes in the following verses, giving us the sense, though not so strictly tying himself to the words; and this is a proper proof, to the Jews at least, whom he had called a little before the keepers of these oracles.
There is none righteous, no, not one: the more general proof with which he begins, is taken out of Psa_14:3, and Psa_53:1, upon which places see the annotations.