Parallel
Exodus 24:10
Brenton's English Septuagint · Berean Standard Bible
And they saw the place where the God of Israel stood; and under his feet was as it were a work of sapphire slabs, and as it were the appearance of the firmament of heaven in its purity.
and they saw the God of Israel. Under His feet was a work like a pavement made of sapphire, as clear as the sky itself.