Once a Christian becomes a believer I think it's important to study alternate religions and cults in order to understand their fallacy and have a basis to disprove their false doctrine.
I agree with your statement AoG, but I still think it is dangerous for a mature Christian to be exposed to certain books and material that has come from a supposed Christian sorce. I will use a simple example I read recently.
Here are two verses from the bible:
1 Timothy 1 vs 15: "Christ Jesus came into the world to save sinners"
Luke 5 vs 32 "I have not come to call the righteous, but the sinners to repentance"
Now heres a statement from Robert Schuller, someone I thought was a man of God, yet today I am very sceptical of anything that comes from his mouth.
"I don't think anything has been done in in the name of Christ and under the banner of Christianity that has proven more distructive to human personality and hence, counter productive to the evangelism enterprise than the often crude, uncouth and unchristian strategy of attempting to make people aware of their lost and sinful condition."
The problem is that in order forme to repent I need to acknowledge I am a sinner, Yet Robert Schuller is saying that telling somebody they are a sinner and they need to repent is unchristian like and is counter productive to evangelism.
I took this example from a book that was written in 1985, can you imagine how this has grown in the church, and how the emerging church with its heresies have infultrated the christian teaching in many of the churches around the world. Our modern society is re-inventing Christ to suit human needs and human philosophy. We need to wake up and expose these teachings.