"Although no Scripture mentioned contraception, Ford believed the church’s teachings were grounded in divine revelation and therefore not to be questioned. The question was left for consideration by the Pontifical Commission on Birth Control, held between 1963 to 1966. This commission by an overwhelming majority – a reported 80 percent – recommended the church expand its teaching to accept artificial contraception. That was not at all unusual. The Catholic Church had changed its stance on many controversial issues over the centuries, such as slavery, usury and Galileo’s theory that the Earth revolves around the sun. Minority opinion, however, feared that to suggest the church had been wrong these last decades would be to admit the church had been lacking in direction by the Holy Spirit. Paul VI eventually sided with this minority view and issued “[w:Humanae Vitae|Humanae Vitae]],” prohibiting all forms of artificial birth control. His decision, many argue, was not about contraception per se but the preservation of church authority. An outcry ensued from both priests and laypeople. One lay member of the commission commented, “It was as if they had found some old unpublished encyclical from the 1920s in a drawer somewhere in the Vatican, dusted it off, and handed it out.”"
January 1, 1970
https://en.wikiquote.org/wiki/Christian_views_on_birth_control