Verses with the word firmament in the Apocrypha (7 verses):

2 Esdras 4:7
And he said unto me, If I should ask thee how great dwellings are in the midst of the sea, or how many springs are in the beginning of the deep, or how many springs are above the firmament, or which are the outgoings of paradise:

2 Esdras 6:4
Or ever the heights of the air were lifted up, before the measures of the firmament were named, or ever the chimneys in Sion were hot,

2 Esdras 6:20
And when the world, that shall begin to vanish away, shall be finished, then will I shew these tokens: the books shall be opened before the firmament, and they shall see all together:

2 Esdras 6:41
Upon the second day thou madest the spirit of the firmament, and commandedst it to part asunder, and to make a division betwixt the waters, that the one part might go up, and the other remain beneath.

Sirach 43:1
The pride of the height, the clear firmament, the beauty of heaven, with his glorious shew;

Sirach 43:8
The month is called after her name, increasing wonderfully in her changing, being an instrument of the armies above, shining in the firmament of heaven;

Additions to Daniel 1:34
Blessed art thou in the firmament of heaven: and above ail to be praised and glorified for ever.