CCC 625

Christ's stay in the tomb constitutes the real link between his passible state before Easter and his glorious and risen state today. the same person of the "Living One" can say, "I died, and behold I am alive for evermore": God [the Son] did not impede death from separating his soul from his body according to the necessary order of nature, but has reunited them to one another in the Resurrection, so that he himself might be, in his person, the meeting point for death and life, by arresting in himself the decomposition of nature produced by death and so becoming the source of reunion for the separated parts.