Charles H. Spurgeon on Psalms 5:9

"Their throat is an open sepulchre." This figure graphically portrays the filthy conversation of the wicked. Nothing can be more abominable to the senses than an open sepulchre, when a dead body beginning to putrefy steams forth its tainted exhalations. What proceeds out of their mouth is infected and putrid; and, as the exhalation from a sepulchre proves the corruption within, so it is with the corrupt conversation of sinners. Robert Haldane's "Expositions of the Epistle to the Romans," 1835.