You will be greeted by a church leader who will talk to you briefly, ask you to publicly confess your faith in Jesus, and then welcome you as a member. By being a church of member you are making a public, formal, commitment to this congregation. Although attendees can have a sense of responsibility and commitment, membership makes the commitment public and concrete. Even when our intentions are good, we all know that public commitments impact us more deeply that private feelings. Church membership also intensifies our commitment.
Members are committed to on another.
Again, attendees can have a sense of commitment. In addition, you are inviting the other members and the leaders of this church to commit themselves to you. Confess Jesus as Lord Publicly. All that is expected is what the Bible requires of any follower of Jesus. Progress in obedience to Christ.