I don't usually use the Egyptians for the morality argument; but instead use them to refute that the 10 commandments are not original. Since many religious people think that all morals are based on the Bible, and specifically the 10 commandments, I suppose this could in-turn be used in morality arguments.
If you can get a theist to concede that the Egyptians did it first, be sure to push that they they had more core laws; and that their laws were far better universal laws, especially compared to some of the crazy obscure things you can find in the Bible.
careful with invoking The Negative Confessions as they weren't a codified ethical or moral law. they appear in abbreviated and often altered form on many Egyptian tombs and apparently what appeared on a person's tomb was only their personal ethic. in that case a knowledgeable Christian will object that that's not absolute morality of the type in the OT. there's also the fact that the Book of the Dead was edited several times from around 2400-1600 BCE and so provides another argument against absolutism and for a valid comparison.
i think you're better off going with Hammurabi's Code. it is preserved on a stone slab rather than on papyrus and dates to 1760 BCE. Hammurabi's Code predates the writing of the OT by a substantial margin- even if the Christian clings to Mosaic authorship of the Pentateuch that would date The Ten Commandments to around 1250 BCE, already almost 500 years after Hammurabi's Code. of course we know from textual criticism, source criticism, and archaeology that the oral stories that formed the OT didn't even begin until 1250 BCE while the OT wasn't fixed as we have it today until 450 BCE with changes being made during that time. finally, because it is preserved in stone we know that it wasn't changed after the time of it's writing. what we have is the original code.
you guys are killing me. lol.
my secret: i read a lot, have a great memory, and i work from home so i can stop in and see what's going on from time to time or when i get an email notification of a new discussion or post.
there ya go. omnipresence and omniscience explained! :P
and Johnny, yeah, i like the book of the dead too and i've used it myself and will continue to. it's just good to have Hammurabi in yer back pocket. ;)