16. filthy—in Arabic "sour" (Ps 14:3; 53:3), corrupted from his original purity.

     10-12. As it is written, &c.— (Ps 14:1-3; 53:1-3). These statements of the Psalmist were indeed suggested by particular manifestations of human depravity occurring under his own eye; but as this only showed what man, when unrestrained, is in his present condition, they were quite pertinent to the apostle's purpose.