Church: Who built the church?
In Matt. 16:18 Jesus said to Peter, "upon this rock I will build my church; and the gates of hell shall not prevail against it". Jesus tells Peter in the next verse, "I will give unto thee the keys of the kingdom of heaven". Jesus is still talking about the church and uses the word "kingdom", which is another word meaning the "church". The "church" and "kingdom" are the same and Christ is the builder.
Not only did Christ build the church, but he purchased it also. Paul told the elders at Ephesus in Acts 20:28, "to feed the church of God, which he hath purchased with his own blood". Therefore, Christ is the builder and owner of the church.
In Eph. 1:22-23 it says, "and gave him to be the head over all things to the church, which is his body". Here we understand that Christ is the head of the "church", which is his "body". The "body" and the "church" are one in the same. Notice in Eph. 4:4, it says "there is one body". Jesus built one church, which is the one body. This one body, the church, is not composed of the many different denominations that exist today. Denominations have their origin with man; the origin of the church is from Christ.
For more about why the one church that Jesus built is not composed of various denominations, click on Church: Is it composed of many different denominations?