The study of the church, including its nature, ordinances, ministries, mission, and governmental structure, is called Ecclesiology. Evolving from the Scottish word kirk, the English word “church” derived from the Greek Kuriakos, meaning “belonging to the Lord.” It is found only twice in the New Testament, an adjective applied to the Lord’s supper and the Lord’s day. The frequent word ekklesia was translated into the English expression “church” that we employ in the New Testament today. Neither Kuriakos nor ekklisa were used to refer to a building or place of gathering until the Greeks, in post-Apostolic times, substituted the term kuriakos, meaning “the Lord’s House,” to designate a church building. In the New Testament, the words used for a religious place of assembly are exclusively temple or synagogue.
Separation of The Church from Israel
God’s first and only covenant nation is Israel, and He called them His “firstborn son.” And Israel is the only nation He sovereignly chose to reveal Himself to, not a giant and mighty nation, but so insignificant they appeared to be nothing more than a small, powerless family. It says, “You only have I known of all the families of the earth” (Amos 3:2); “The Lord did not set His love on you nor choose you because you were more in number than any other people, for you were the least of all peoples” (Deuteronomy 7:7).