Solomon had 4,000 stalls for horses and chariots, and 12,000 horses, which he stationed in the chariot cities and also with him in Jerusalem.
We have here Solomon in his throne, and Solomon in his grave; for the throne would not secure him from the grave. Mors sceptra ligonibus aequat - Death wrenches from the hand the sceptre as well as the spade. I. Here is Solomon reigning in wealth and power, in ease and fulness, such as, for aught I know, could never since be paralleled by any king whatsoever.
Commenting on 2 Chronicles 9:13-31
HIS RICHES. (2Ch. 9:13-28) Now the weight of gold that came to Solomon in one year--(See on 1Ki. 10:14-29). six hundred and threescore and six talents of gold--The sum named is equal to £3,646,350; and if we take the proportion of silver (Ch2 9:14), which is not taken into consideration, at one to nine, there would be about £200,000, making a yearly supply of nearly...
Commenting on 2 Chronicles 9:13-28
Solomon had four thousand stalls--It has been conjectured [GESENIUS, Hebrew Lexicon] that the original term may signify not only stall or stable, but a number of horses occupying the same number of stalls. Supposing that ten were put together in one part, this would make forty thousand.