I know Old Testament, but you obviously don't know Quran. Read it and compare, that's all I can tell you. One describes what happened in some ancient times, ancient times even for the first reader of these texts. Another gives pure "instructions." Read and compare.

Or read the "Gospels" from New Testament for the "deeds of Jesus" especially related to stoning:

http://biblehub.com/niv/john/8.htm

and compare with the "deeds of Muhammad" as told by Hadith:

http://quotingislam.blogspot.co.at/2011/06/muhammad-ordered-...