Because ye have said,.... Within themselves; they thought so, if they did not say it in express words; and their conduct and behaviour showed that these were the sentiments and presumptions of their minds:We have made a covenant with death, and with hell are we at agreement: as safe from death, and secure from hell, or the grave, as if a covenant and compact had been formally entered into between them.
The phrases are expressive of their being fearless of them, and of their confidence and assurance that they should not be hurt by them.