It is he that sitteth upon the circle of the earth, and the inhabitants thereof are as grasshoppers; that stretcheth out the heavens as a curtain, and spreadeth them out as a tent to dwell in.
The text may be used to say that space is still being stretched out Pointed out by Melwick here
It is also a prediction that the Earth is spherical before this was supposedly established.
Stretches out a ‘curtain’ then spreads out further ‘a tent’. Two different types of stretching. Confirming Kerr’s revelation as of such.