The 2nd Chapter of Acts was a Jesus music and early contemporary Christian music group composed of sisters Annie Herring and Nelly Greisen and brother Matthew Ward. They began performing in 1973 and enjoyed their period of greatest success during the 1970s. The group disbanded in 1988. (More from Wikipedia)
Barry McGuire had a prominent and influential hit song in 1965 with “Eve of Destruction” (written by P. F. Sloan); he was with New Christy Minstrels for a time and sung lead on their first hit song, “Green, Green”. McGuire became a born again Christian in 1971 and released an album on Myrrh Records in 1973 called Seeds. Singing background vocals on the album is a family trio that later became an early CCM band, 2nd Chapter of Acts.