It's always good to read the context of scripture. In this case, context falls smack dab right in the middle of the scripture being quoted....and it says, "when ye go into the tabernacle of the congregation". Again, this is not a total prohibition. It's when you go to the tabernacle.
When we build doctrine, it's very important to read all of scripture, in its context. I could give plenty of examples of plucking scripture out of context to come up with doctrine that is not sound. For example, 1Cor 15:29 would seem to suggest that Baptizing for the dead is something we should do. Only the Mormans believe that, and they use this scripture as support. Of course this is not what the Bible teaches, when you read the WHOLE of scripture.
When advise goes beyond what the Bible says, it turns into legalism.