I have said many times that there are no contradictions in the Scriptures, only faulty translations.
I'm not sure if there are contradictions in the scriptures within the scripture. I don't think that is what people mean when they say religion (the Bible) contradicts itself?
I think it has more to do with how the practice of religions contradict the scriptures. Many of devout faith will spout off scripture and say or act just the opposite.
Like a cop that will arrest you for speeding yet will cruise around at 20 mph over the speed limit. How many times have you seen a cop breaking the speed limit without using their emergency lights and siren?
I've met people of devout faith that follow their religion exactly. They don't use scripture as a weapon. Their lives are lead in a way that practices what they preach. Those people are getting harder and harder to find as time passes.
Spend some time in the parking lot before church and watch the people in their cars. Pay attention to them on a Wednesday or Friday night. The contradictions are mind boggling.
Some churches are populated by 'broken' people. Sunday is the day of the week they try to rectify their actions from the prior six days. They are a contradiction to their own faith.
Then you have the contradictions of scripture to sound reasoning. The scripture that contradicts normal life experiences. Love thy neighbor but protest a funeral and that kind of thing. Hatred and intolerance run rampant in religious believers.
You can have free will as long as you believe as they tell you or you will be punished. A contradiction.
Scripture is like our laws. If one were to follow scripture or our laws exactly as written life would be very different than it is. Law abiding citizens are not complete law abiding in every letter (intent) of the law. Devout religious faith is not complete devout religious faith in every letter (intent) of the scriptures. There are contradictions between the letter and the practice.
I have met people that claim they are "God's Warriors". These people are wonderful if you believe what they believe but hateful and spiting to "the heathens". They do not love their fellow man. A contradiction to the principals of the teachings of Christ.
Many people see these contradictions of actions as invalidating religion.
It becomes "Do as I say, not as I do" and people value sound reasoning. Very few devout believers lead by example. Contradictions are in the practical application.