I'm not sure what the issue is. Slavery was a fact of life in Greco-Roman times, much as segregation was a fact of life here in the South for 100 years. No one thought much about it.
In the passage in Timothy quoted, it could easily have come from the Talmud (actually probably did), which often says "lo nitna Torah l'malachei hasharetz" (The Torah wasn't given to the ministrering angels--meaning that if people were perfect they wouldn't need the Torah). As for the list, I found it interesting since it basically recites the ten commandments
"Knowing this, that the law is not made for a righteous man, but for the lawless and disobedient, for the ungodly and for sinners, for unholy and profane, for murderers of fathers and murderers of mothers, for manslayers, for whoremongers, for them that defile themselves with mankind, for menstealers, for liars, for perjured persons..."
So "Lawless and disobedient"="I am the Lord Your G-d."
"Ungodly"="You shall have no other gods before me."
"Unholy"="You shall not take the name of G-d in vain"
"Profane"="Remember the Sabbath Day and keep it holy."
"Murderers of father, murderers of mothers" =honor your father and your mother
"Manslayer" =You shall not murder
"Whoremongers"=You shall not commit adultery
"defile themselves with mankind"=bearing false witness against one's fellow man
"Menstealers"=Do not steal (referring to one who steals another person and sells him, see Sanhedrin 86a). The order here is a little off, btw.
"Liars and perjured persons"=Do not covet your fellow's house, which often leads one to lying and cheating.