The rule is rather simple. When paraphrasing acknowledge it as such, when using quotations acknowledge the proper source.  And don't assume anything, I didn't imply you are an " idiot ". Rather I point out as motleycrew,  "Sharia law" is seriously problematic throughout the world. That just as "Sharia law" is 180 degrees from the Law and Gospel teachings of Christianity, the Muslim faith is 180 degrees from the Christian faith. 
In short, your attempts in failed comparisons between the two are silly, the reflection of an educationally untrained individual in religious studies. Do not to take it personally you are not alone in your quandary. Which is why individuals are very stupidly calling others "racist and bigots" for their rejection and objection to "Sharia law". 
If you really want to educate yourself in the complexity of religious studies and I hope you do/would Northwest Christian University is darn good stating point.