The Catholic Church is the world's largest, and oldest, Christian religion. The churches over 860 million members count for almost one-fifth of the of the Earths population. Such a large religion is open to be interpreted in many ways, to avoid having the Churches views distorted they have the "Catechism".
             The "Catechism" is the place to go for information about Catholic belief. This book attempts to explain a Catholics Questions like "Why is the Catholic Church opposed to birth control? Where in the Bible is birth control condemned as being contrary to the Will of God?" I as a non-Catholic Christian do not agree with the Churches views on birth control or abortion. But by reading the "Catechism" and researching these subjects on Catholic web sites. I will attempt to show the basis of the Churches views.
             The Catholic Church is not opposed to birth control when it is accomplished by natural means, by self-control. It is opposed only to birth control by artificial means, by the employment of pills, condoms, IUD's, foams, jellies, sterilization, non-completion of the act of sexual union. ( Terwilliger, Web ) God slew Onan for practicing contraception (Gen. 38:9-10 Bible); the word ``onanism'' derives from Onan's deed. In Genesis 38 there is a reference to birth control where Onan spills his seed on the ground, coitus interruptus. In the story of Tamar and Onan, Tamar was married to Er, but Er died before they had any children. Following a custom called the "Law of the Levirate", Er's brother Onan is commanded by Judah (their father) to have intercourse with Tamar. (38:8 Bible) Then Judah said to Onan, "Go in to your brother's wife and perform the duty of a brother-in-law to her, and raise up offspring for your brother". (38:9 Bible) But Onan knew that the offspring would not be his; so when he went in to his brother's wife he spilled the semen on the ground, lest he should give offspring ...