'Grave' in the Bible

Their throat is an open grave;they deceive with their tongues.Vipers’ venom is under their lips.

And not only this, but we too, who have the first fruits of the Spirit [a joyful indication of the blessings to come], even we groan inwardly, as we wait eagerly for [the sign of] our adoption as sons—the redemption and transformation of our body [at the resurrection].

"nor 'Who shall go down into the abyss?'" --that is, to bring Christ up again from the grave.