2 Chronicles 32:29-31

29 He provided cities for himself and purchased flocks and herds in abundance, for God had made him extremely wealthy.

30 It was this same Hizkiyahu who blocked the upper outlet of the Gichon Spring and diverted the water straight down on the west side of the City of David. Hizkiyahu succeeded in all that he did.

31 However, in the matter of the ambassadors from the princes of Bavel, who sent to him to learn of the marvel that had taken place in the land, God left him by himself, in order to test him, so that he might know everything that was in his heart.