Musar zu Haggai 2:10

In any event, of what does a man have to be proud? If he is proud of his wealth, the Holy One Blessed is He has already declared, “Mine is silver and mine is gold says Hashem of Hosts” (Chaggai 2:10). Hashem can deprive a man of his wealth in an instant. In fact, we have already heard of several wealthy men who were murdered for their riches. Bandits set their eyes upon them, pursued them and struck them down, subjecting them to dreadful suffering before their souls departed. Some did not even merit burial, which is itself a terrible fate. We have observed that no adversary or mishap came upon the numerous others who traveled along the same road but only upon the wealthy man on account of his wealth.