Church Membership - Devotion and Loyalty to the Local Church

Romans 12:3-6
3 For by the grace given to me I say to everyone among you not to think of himself more highly than he ought to think, but to think with sober judgment, each according to the measure of faith that God has assigned. 4 For as in one body we have many members, and the members do not all have the same function, 5 so we, though many, are one body in Christ, and individually members one of another. 6 Having gifts that differ according to the grace given to us, let us use them: if prophecy, in proportion to our faith;