LEV1089 Do not impose endless or unnecessary tasks on a Jewish slave. Although today, the laws of Jewish slaves are not applicable, one still must be aware of this mitzvah, and apply its principles to poor, unfortunate Jews who take shelter in one’s home. One should keep in mind that sometimes, the wealthy do not remain wealthy, and the poor do not remain poor. Wealth and poverty are like on a turning wheel, and just as the poor can become rich, the rich can become poor. Hashem can alleviate a person’s poverty at a moment’s notice, and He can take away a person's wealth and give it to whomever He wants just as quickly. A man might be so rich that counting his money is like counting the sand at the side of the sea. Perhaps he will bury his money in secure underground vaults, will buy and lease properties and will think that all is well, but with one sin against Hashem he can quickly lose all of it. If he has merits, Hashem will allow him to hold onto His blessings.