'Sealing' in the Bible

When Ephraim spoke, there was trembling and terror.He exalted himself [above the other tribes] in Israel;But through [the worship of] Baal he became guilty and died [spiritually, and then came ruin, sealing Israel’s doom as a nation].

So they went and made the tomb secure, and along with [stationing] a guard of soldiers [to be on watch] they set a seal on the stone.