Woe unto him that buildeth his house by unrighteousness, and his chambers by injustice.... Shalt thou reign, because thou closest thyself in cedar?... But thine eyes and thine heart are not but for thy covetousness, and for to shed innocent blood, and for oppression, and for violence, to do it. The ways of the dishonest rich are vividly described by Jeremiah. They set snares and catch people with lying. Their houses are full of evidences of their crooked dealings. They maintain themselves in luxury despite wanton expenditures by violating the needs of the fatherless and the needy. Zephaniah was no less direct in pointing out the dangers in wealth. He declared that ill-gotten gains shall themselves become a prey and that the houses of the sinful rich shall become desolate. All their silver and their gold shall not be able to deliver them from their ultimate desolation. In a beautiful and effective style the Wisdom writer in Proverbs unconsciously sums up the Old Testament philosophy concerning wealth: Labor not to become rich; cease from thine own wisdom. Wilt thou set thine eyes upon that which is not? For riches certainly make themselves wings; they fly away as an eagle toward heaven. The Old Testament with surprising uniformity supports the cause of labor. The welfare of the slave is frequently espoused. According to the Deuteronomic Code a runaway slave who was caught did not necessarily need to be returned to his owner. In fact, a person who harbored such a slave was expressly enjoined not to return him. By this injunction the rights of property and vested interests in slaves were ignored. Such an attitude was in opposition to the Code of Hammurapi and to the codes of vested interests throughout history. Slavery, however, was a well-established institution among the ancient Hebrews.[IV-8] Although the law book of Hammurapi fixed the wages of laborers, the Old Testament law book restricted the hours of labor. Not only is the master to limit his labor to six days a week, but he is commanded to see that his slaves, male and female, do not work more than six days. Modern industry, even twentieth century manufacturing enterprise in the United States, has been persistently violating the labor rules of the Hebrew law-givers. Employers are commanded not to take advantage of poor and needy hired servants. They shall not oppress labor simply because they are powerful and labor is weak. Even the poor immigrant laborer is not to be exploited! The first legislation in behalf of immigrants is found in Deuteronomy. Employers must respect the needs of alien workers. The foreigner shall not be oppressed. In the ordinary dealings between citizens and foreigners, justice must not be perverted. The Hebrew law makers even went so far as to issue the command: Love ye therefore the strangers, for ye were strangers in the land of Egypt.