Actually the church started wayyyyy back. It actually started with Israel in the wilderness:
Ac 7:37-38 This is that Moses, which said unto the children of Israel, A prophet shall the Lord your God raise up unto you of your brethren, like unto me; him shall ye hear. This is he, that was in the church in the wilderness with the angel which spake to him in the mount Sina, and with our fathers: who received the lively oracles to give unto us:
I am sure the dispensational view defines the "church" as gentile believers. This is a common error disproven by the fact that we gentiles are only grafted into an inheritance promised to the Jews:
Eph 2:12-16
That at that time ye were without Christ, being aliens from the commonwealth of Israel, and strangers from the covenants of promise, having no hope, and without God in the world:But now in Christ Jesus ye who sometimes were far off are made nigh by the blood of Christ.For he is our peace, who hath made both one, and hath broken down the middle wall of partition between us;Having abolished in his flesh the enmity, even the law of commandments contained in ordinances; for to make in himself of twain one new man, so making peace;And that he might reconcile both unto God in one body by the cross, having slain the enmity thereby: