First century Christians approached their worship of God in ways that differ from modern churches, including their use of a cappella music.
Jesus said, “He who has My commandments and keeps them, it is he who loves Me. And he who loves Me will be loved by My Father, and I will love him…” (John 14:21). He also said, “If you keep My commandments, you will abide in My love…” (John 15:10). Plain talk. Hard to swallow, maybe, but not hard to understand. Simply put, love and obedience are inextricably linked, each following on the heels of the other. According to Jesus, to love Him is to obey Him, and to obey Him is to be loved by Him.