Green Brook Baptist Church grew from the seeds planted by Rev. Ralph N. Walter and his wife, Frances. In 1951 they began a “Good News Club” for children at their home at 15 Plantation Avenue in Green Brook. After seven years of meeting at their home, they outgrew the space and moved their Sunday School program to Town Hall. The Sunday School program continued to grow, and after a few months of meeting at the Town Hall, they moved to the Green Brook School building. The school building offered more rooms for classes that were needed to teach the over 100 children in attendance.

Moved by God and the growth of the Sunday School Program, in 1952 the Walters began church services at the school building. On June 9, 1952, it was voted by the 15-member congregation to adopt the name Greenbrook Baptist Church, and later that year, the church was granted its certificate of incorporation. The incorporators were Mrs. Florence Deneka, Charles Flores, and Rev. Walter, and Donald Coords and William Fant as Trustees. The groundbreaking service for the Green Brook Baptist Church building at its home at 170 Greenbrook Road was held on Sunday, October 10, 1957. The brick chapel was completed and dedicated in late 1959.

Since its founding, Green Brook Baptist Church has been serving the community and teaching God’s Word. Over the past 70 years, there have been changes in the church community and in 2022, Green Brook Baptist Church began working on a merger with Grace Christian Fellowship Church (GCF Church) of Middlesex, NJ. As part of the merger, the Pastors of GCF Church, Dr. David SeraJosef and Paolo SeraJosef were called as church leaders and GCF Church members were accepted into Green Brook Baptist Church membershp on June 12, 2022. The Green Brook Baptist Church and GCF Church formally joined and held their first combined service on July 3, 2022.