Jesus taught that the communion supper is to consist of bread and fruit of the vine. Christians are obligated to preach the gospel everywhere to the extent of their ability. Still, though, in the final analysis, they would be singing only. On the other hand, if the church sings to the accompaniment of an organ, those thus participating have added something to what the Lord prescribed. The nature of the original command has been supplemented.
Additions are wrong.
And so, the serious Bible student must conclude that the use of a mere aid only accommodates obedience to God's will. On the other hand, those who respect the authority of the sacred Scriptures will not tamper with the divine prescriptions for worship by the clutterment of additions. They will not add to sacred instruction, for to do so is to invite the wrath of God ultimately. To many, such matters perhaps seem rather trivial. This is because they have never fathomed the concept of the necessity of absolute obedience to the sovereign Creator.