Why does God allow sinful things to worship Him?
Question:
If your opinion of using musical instruments in the New Testament is sin, why does God allow sinful things to be used to worship Him, either symbolically or physically or metaphorically or whatever in His presence?
In the Old Testament sacrifices and musical instruments are used to worship God; in the New Testament sacrifices are not allowed because Jesus himself is the sacrifice. What about the musical instruments?
One person preached that God must be worshipped in the spirit and truth; I do agree. Why do we use our mouth and tongue and voice to sing?
Answer:
You start out with a false premise. No one states that musical instruments are sinful. All that is pointed out is that God commanded the use of musical instruments in His worship in the Old Testament, but in the New Testament, He only commanded singing (Ephesians 5:19; Colossians 3:16). We don't change what God has said.
You noted that sacrifices changed between the Old and New Testaments. Why is it difficult to grasp that other things changed as well? For example, in the Old Testament, the center of worship was at the temple. In the New Testament, there isn't a single physical location (John 4:21-24). In the Old Testament, there were priests to offer worship on behalf of the people. In the New Testament, all Christians are priests (I Peter 2:9).
Moses once was reprimanded for striking a rock with his staff (Numbers 20:11-12). Moses was in the wrong, despite God specifically telling him to bring his staff (Numbers 20:8) and despite the fact that on a similar occasion God told him to strike the rock (Exodus 17:5-6). God means exactly what He says, and for men to try to change what God said in any way becomes a sin.
