prove me ... herewith - with this; by doing so. Test Me whether I will keep My promise of blessing you, on condition of your doing your part (2Ch 31:10).
pour ... out - literally, “empty out”: image from a vessel completely emptied of its contents: no blessing being kept back.
windows of heaven - (2Ki 2:7).
that ... not ... room enough, etc. - literally, “even to not ... sufficiency,” that is, either, as English Version. Or, even so as that there should be “not merely” “sufficiency” but superabundance [Jerome, Maurer]. Gesenius not so well translates, “Even to a failure of sufficiency,” which in the case of God could never arise, and therefore means for ever, perpetually: so Psa 72:5, “as long as the sun and moon endure”; literally, “until a failure of the sun and moon,” which is never to be; and therefore means, for ever.