It is sufficient to name a “being,” and we mean, in a merely approximate yet portentous thinking, the being of this being. We name being along with it. Being is said along with every word and verbal articulation, if not named each time with its own name. Speaking says being “along with,” not as an addition and a supplement that could just as well be left out, but as the pre-giving of what always first permits the naming of beings.

[…]

Must not being, due to its multiple and constant saying, be already so articulated and well-known that its essence lies uncovered before us in complete determinacy? But what if the most said in saying kept its essence secret, if being kept to itself in the disclosure of its essence, and this not only occasionally and incidentally but according to its essence? Then not only would concealment belong to being, but concealment would have a marked relation to “saying” and would be silence.

— Heidegger, Basic Concepts (tr. Aylesworth)