A sentence with the word firmament is The stars in the firmament shine brightly.

firmament

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The cast of Firmament - 2013 includes: Karl Maria Kinsky as Der Mann

Let us turn to Genesis ch.1v 6,7 and 8. And God said, Let there be a firmament in the midst of the waters, and let it divide the waters from the waters.

7 And God made the firmament, and divided the waters which were under the firmament from the waters which were above the firmament: and it was so.

8 And God called the firmament Heaven. And the evening and the morning were the second day.

This (firmament also includes the apparent surface of the imaginary sphere on which celestial bodies appear to be projected). All within () was copied and pasted.