splendor, majesty: the visible, awe-inspiring radiance that marks a legitimate sovereign
This word names the splendor you can actually see on a sovereign, the shining, awe-commanding aura that announces a king as king and God as God. It is almost always poetic, and it belongs, first and above all, to God. When it lands on a human ruler it is on loan: the king wears a splendor that is really God's, handed down to him.
Because it is something worn and given, this word keeps company with verbs of clothing and bestowing, and it turns up again and again at moments of transfer. Moses places a portion of his own dignity on Joshua. God gives royal splendor to Solomon. God clothes the psalmists' king in it. God will set it on the promised coming ruler. And it is pointedly withheld from a contemptible king who seizes a throne he was never granted. Its most frequent partner is a near-twin word for outward glory, and the two are so often paired that together they work almost as a single phrase for regal magnificence.
The splendor can even be located in something heard rather than seen: the thunder of God's voice in judgment, or the terrifying snort of a war-horse charging into battle. Scholars debate whether this points back to an older sense tied to sound, but in the Bible itself the word still means visible majesty, here simply attached to an awesome noise.