Ironically, those who suspend their faith in the Bible or God as a result of this issue are simultaneously saddled with a perplexing dilemma or radical skepticism. In the Genesis account it is clear that Egypt also imposed slavery as it was imposed upon Joseph. Later, Moses would lead the family and descendants of Joseph out of Egypt and to freedom. Note these comments from the Encyclopedia Britannica where it is indicated that even white slaves have been used:
It is probable that the Ottoman Empire, and especially its centre in Turkey, should be termed a slave society. Slaves from both the white Slavic north and the black African south flowed into Turkish cities for half a millennium after the Turks seized control of much of the Balkans in the 14th century. The proportion of the population that was slave ranged from about one-fifth in Istanbul, the capital, to much less in remoter provincial areas. Perhaps only people such as the slave owners of the circum-Caribbean sugar islands and the American South were as preoccupied with slaves as were the Ottomans.(1)
The Greek word used for “Servants” in 1 Peter 2:18 is not the typical Greek word for “slave” either. The Greeks and Romans, who often used white slaves, involved themselves with slavery wherein the slave had no rights at all. The Biblical word for “servant” used here though refers to one who lives in the same house as another as a servant or slave (See Colossians 3:22-25). For a more comprehensive review of this topic from a Christian perspective click here.
"The slaves, the second example Peter gives, was not viewed as a moral person, but rather as one who was simply to obey unquestioningly. Thus even in addressing them Peter is raising their status. The slaves had few rights and could be treated by their masters arbitrarily...Thus it was quite possible that a slave would “suffer for doing good. ” Furthermore, the slave, unlike the Roman citizen, could be crucified. Thus Peter urges them to identify with Jesus, who also suffered the extreme penalty, which was so shameful that Roman writers would rarely mention it."(4)
Notice Exodus 21:16, “He who kidnaps a man and sells him, or if he is found in his hand, shall surely be put to death.” KJV Kidnapping is expressly against sound doctrine in 1 Timothy 1:10. The full testimony of Scripture ultimately militates against slavery and slave trading. Passages such as Philemon 16, Galatians 3:28, 1 Peter 2:21-25 do seem to offer the death blow to slavery. Gordon D. Fee notes, "The New Testament writers also do not denounce slavery as an evil—although they undercut it by urging that the householder and his slaves were brother and sister in Christ (see Phlm 16; cf. Eph 6:9)."(5) This is why historically Christian opposition to slavery is what has largely contributed to its abolition
As Westerner’s slavery is not directly applicable to us today. But the relationship a believing employee has with their employer still applies. Peter nor Paul may have expressly condemned slavery because they expected believers to accept the will of God in whatever job or social position they found themselves.
2) "slavery." (2012). Encyclopedia Britannica
3) Jamieson, Robert, A. R. Fausset, and David Brown. A Commentary, Critical and Explanatory, on the Old and New Testaments,. Hartford: S.S. Scranton, 1877
4) Arnold, Clinton E. "1 Peter." Zondervan Illustrated Bible Backgrounds Commentary. Vol. 4. Grand Rapids, MI: Zondervan, 2002