Charles Ellicott Commentary Psalms 122:5

"For there are set thrones for judgment, The thrones of the house of David." — Psalms 122:5 (ASV)

Thrones. —Jerusalem, at first a cause of wonder as a city, is now to the pilgrims a cause of admiration as the capital. The mention of the “House of David” itself settles the title. However, this does not prove that the monarchy was still in existence, since even the Sanhedrin might be said to administer justice from the throne of the house or successors of David.

The administration of justice was the original and principal duty of a monarch in time of peace (1 Kings 3:11 and following). The marginal note “do sit” gives the literal rendering of the Hebrew. This Hebrew use of sit, where English speakers would say stand, is exactly like provincial Scottish dialect.