The words of the American Book of the Dead are not arbitrary. Nor are the words we speak daily arbitrary. Problem is we rarely listen to ourselves.
And even if we did listen to ourselves more often than not we are using a vocabulary we don't recognize. Often we speak with more precision than we give ourselves credit for.
Here you will find a dictionary of words to help elucidate this mystery. Learn these definitions and listen to yourself. You'll learn more than you thought you knew.