Psalm 21:5
His glory is great in thy salvation: honour and majesty hast thou laid upon him.
Cross-reference
Psalm 62:7 also ties salvation and glory together in God — a direct parallel to the king's glory being rooted in God's salvation.
Psalm 45:3 uses the exact phrase 'splendor and majesty' for the king, directly paralleling the bestowed glory.
Psalm 3:3 declares God is the psalmist's glory — a parallel that God is the source of the king's glory and honor here.
2 Samuel 7:8 recounts God raising David from shepherd to ruler — the historical basis for the honor and majesty laid upon the king here.
In 2 Samuel 7:9, God promises David a great name — the basis for the glory and majesty bestowed on the king in this psalm.
In Matthew 28:18, Jesus declares all authority given to him, fulfilling the bestowal of splendor and majesty on the king in this psalm.
Ephesians 1:20-22 describes Christ's exaltation above all powers, echoing the splendor and majesty bestowed on the king here.
1 Peter 3:22 also speaks of Christ at God's right hand with all powers subject to him, reflecting the king's bestowed majesty.
Zechariah 6:13 speaks of the Branch obtaining royal majesty and ruling, prefiguring the messianic king who receives splendor.
1 Chronicles 17:11-15 records God's promise to establish David's throne forever, which underlies the king's glory in this psalm.