2 Chronicles 23:13
And she looked, and, behold, the king stood at his pillar at the entering in, and the princes and the trumpets by the king: and all the people of the land rejoiced, and sounded with trumpets, also the singers with instruments of musick, and such as taught to sing praise. Then Athaliah rent her clothes, and said, Treason, Treason.
Cross-reference
In 1 Kings 1:39, Solomon's anointing similarly features trumpet and rejoicing — a parallel coronation scene confirming the pattern for God's chosen king.
In 1 Kings 1:40, the city resounds with joy as people follow Solomon — identical rejoicing and uproar as at Joash's coronation.
In 2 Kings 9:13, Jehu is anointed with trumpets and shouts — a nearly identical coronation scene, reinforcing the traditional royal investiture.
2 Kings 9:23 has Joram crying 'Treason!' during Jehu's coup — Athaliah's identical cry shows a pattern.
1 Chronicles 15:24 has priests blowing trumpets before the ark—here trumpets are blown at Joash's coronation, linking worship and royal inauguration.
1 Chronicles 25:1-8 lists the temple musicians by family — these are likely the ones performing at Joash's coronation.
In Proverbs 11:10, the proverb 'when the righteous prosper, the city rejoices' is directly exemplified by the people's joy at Joash's righteous rule.
In Proverbs 29:2, the proverb 'when the righteous rule, the people rejoice' applies perfectly to the joyful coronation of the righteous Joash.