If you have to believe it to be a "saved" catholic it sure does.
It completely undermines the Bible that you have to believe the catechism.
The Word of God is sufficient for how to have a relationship with God, how to have salvation...it's all you need.
If we HAVE to believe it ???
You sound like you dont know what you are talking about.
What the CCC is, is, explaining what a Catholic believes.
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Believe me, Catholics believed it all - even before the CCC was written - or even updated !