The moment portrayed was to be a conversation within the Trinity, where Jesus was to be sent for his Earthly mission, having a body of flesh prepared ultimately for; the cross.
Hbr 10:5 Therefore, when Christ came into the world, he said: "Sacrifice and offering you did not desire, but a body you prepared for me;
Hbr 10:9 Then he said, "Here I am, I have come to do your will."
Rev 4:3 And the one who sat there had the appearance of jasper and carnelian. (crystal) A rainbow, resembling an emerald, encircled the throne.
Rev 4:5 From the throne came flashes of lightning, rumblings and peals of thunder.
Rev 4:6 Also before the throne there was what looked like a sea of glass, clear as crystal.
Eze 1:26 Above the expanse over their heads was what looked like a throne of sapphire, and high above on the throne was a figure like that of a man.
Eze 1:27 I saw that from what appeared to be his waist up he looked like glowing metal, as if full of fire, and that from there down he looked like fire; and brilliant light surrounded him.