We use this terminology, and church member is used to describe Christians. We do not talk of being saved, trusting in Jesus, being converted to Christ, or turning to Lord. Baptism is the foundation of biblical soundness. He preaches everything except bapt for remission of sins. We would be more comfortable if they required baptism.
Baptism is a metaphor for what is important.
We have picked up on these two major ideas. But along way in desire to ease understanding may have missed some vital truths about baptism. Seek to find those today, see that at heart of genuine gospel proclamation is biblical nature of baptism. Again, baptism is an important Bible topic. We develop it often, and well.