1:20 open firmament. Both the “lights” (Genesis 1:15) and the “fowl” are said to be in the “firmament of heaven.” However, the fowl were to be in the “open” (Hebrew pene) firmament of heaven, or better, “the face of the firmament of heaven.” Thus, birds fly only in the lower reaches of the vast spaces of the heavens. Or, it may be that there are two different “firmaments of heaven.”