For example, some Pauline Christians may question today whether it is logical to believe God would say touching pork is forbidden:
Deuteronomy 14:8The pig is also unclean; although it has a split hoof, it does not chew the cud. You are not to eat their meat or touch their carcasses.
Indeed, event horizon/rayznack asked exactly this point:
I can't wrap my mind around the belief of the latter that God's creations could be considered unholy. Does God create things that are unholy?
To me, that seems pretty illogical.
So, it appears that God's commandment in the Bible is illogical to him. God says Pigs are unclean and shouldn't be eaten or touched. Muslims have no issue with God creating the clean and unclean in the universe - the good things and the things that are bad, those that are healthy and unhealthy etc. Pauline Christians seem to question this logic.
But moving on to why Pauline Christians now think it ok to eat pork..
Firstly, Jesus is reported to say in the Bible that he did not come to change the law (of Moses) but to fulfil the law.
Secondly, and this is where Pauline Christians have a big problem, after Jesus' crucifixion and supposed resurrection and ascension, the Jewish disciples of Jesus continued to follow the Jewish law.
There was no hint from amongst the disciples that Jesus had taught that they could/should stop following the law - be it over circumcission or of eating pork and other dietary restrictions. The Bible is clear that the law was from God (and indeed Jesus said he did not come to change it). The Bible is also clear that the Jewish disciples followed the law and didn't believe that Jesus had said otherwise.
The Bible even records how Peter resisted giving up the dietary laws - it allegedly took multiple attempts by angels to get him to advocate giving up the dietary requirements (eg not eat pork). I.e. it was not a teaching of Jesus.
Typically, Pauline Christians don't have an answer for this issue.
Cheers,
Shafique