FirmamentSee also Expanse; BD FirmamentLet there be a firmament in the midst, Gen. 1:6 (Moses 2:6).firmament sheweth his handywork, Ps. 19:1.wise shall shine as the brightness of the firmament, Dan. 12:3.brightness did exceed … stars in the firmament, 1 Ne. 1:10.sun of the firmament is … typical, D&C 76:70 (76:71, 81, 109).great lights … in the firmament, Abr. 3:13.