As far as believing in Jesus it is assumed that if you believe in Him you will also accept Him as Lord, which means doing as He says. Obeying Him. He cannot be your Savior unless He is also your Lord. His being Lord comes first. “Lord and Savior.”
As far as believing in the Church, it is by means of the Church that we know about Jesus at all. It is through the Church that we believe in Jesus. Hence, belief and trust in the Church is actually prior to belief in Jesus.