As the church attempted to fortify itself with the doctrine of the Apostles (Acts 2:42); the practice of its worship (Col. 3:16-17); and the fellowship of its followers (Rom 15:5-6); one thing became clear. Satan was not going to make this an easy assignment. The external persecutions (Acts 8:1; 4) and the internal divisions (1 Cor 1:10) produced a strain on the long term reality of its existence and the effectiveness of its message.
We can safely conclude that most of the early recipients were Jewish, however, it was never meant to be restricted to only Jewish thought or culture. In fact, I believe one of the early mistakes of the church was trying to find a way to blend Christianity and Judaism together or replacing one for the other. In reality, Jesus offered fulfillment in one and a future in the other .