It is not biblical but of men. Pope Innocent the III introduced the 7 sacraments in 1215 AD, along with annual confessions. Today mainstream Christianity still adheres to them.
The bible does not say anything about dreaming for Jesus.
The Bible does not say anything about cremation, but it says a lot about burial.
The Bible does not say anything about Thanksgiving. Thanksgiving was started by the Pilgrims/Indians, which was after the Bible was written.
yes there are many bible passages you can find them in the bible
No.
yes
yes
Baptism and the Lord's Supper (Communion).
The bible does not say anything about it.
A:No. The Bible was completed centuries before Ramadan was instituted. In fact, the Bible has nothing at all to say about Islam.
I seriously doubt that the bible has anything to say about vestigial structures. If you adhere to the bible you need to know that you do not need to treat the bible as a science text.
http://www.gotquestions.org/seven-Catholic-sacraments.html