Respond with ~3-4 sentences: Why does the apostolicity of the church matter (What does it affect)?

Concisely describe each (~3 sentences: what is it; what does it teach; why does it matter?): Apostolicity of the church

Concisely define the following (a single sentence): Oneness of the church

Concisely describe each (~3 sentences: what is it; what does it teach; why does it matter?): Credobaptism

Concisely describe each (~3 sentences: what is it; what does it teach; why does it matter?): Transubstantiation

Respond with ~3-4 sentences: Why does the apostolicity of the church matter (What does it affect)?

Concisely define the following (a single sentence): Amillennialism

Concisely describe each (~3 sentences: what is it; what does it teach; why does it matter?): Credobaptism

Concisely describe each (~3 sentences: what is it; what does it teach; why does it matter?): Transubstantiation

Compare premillennialism to amillennialism and state why the difference will matter for faith & practice.