Albert Barnes Commentary 2 Kings 12:5

"let the priests take it to them, every man from his acquaintance; and they shall repair the breaches of the house, wheresoever any breach shall be found." — 2 Kings 12:5 (ASV)

The collection was not to be made in Jerusalem only, but in all the cities of Judah (2 Chronicles 24:5), where the various priests and Levites were to act as collectors in their own neighborhoods.

Breaches – The word in the original includes every kind and degree of ruin or dilapidation.