Commentary for II Kings 12:6

Let take [the money] for themselves—the kohanim. [I.e.,] it will be theirs, and [in return] they will obligate themselves to make the [necessary] repairs to the Beis [Hamikdosh] from their own [funds] .

From his friend. From his acquaintance who frequently visits him.

Restoration. Split[s] and crack[s] in the wall.⁵בֶּדֶק means “examination.” One must examine splits and cracks to determine their method of repair.—Radak