Music has always held an important role in the worship of God's people. In the Old Law, the people were commanded to use various musical instruments in their service to God. However, in every instance involving songs, hymns, or praise in the New Testament church, musical instruments are never mentioned. The change from instruments of music in the Old Law to the human voice as noted in the New Testament is one that makes a significant statement about the nature of worship required in the New Testament church. Complete obedience, love and praise abounding from the heart of man and expressed by the lips is the only musical contribution acceptable to God as noted in the New Testament scriptures below:
Many of us enjoy instrumental music and many of us can play instruments. But like Cain, we shouldn't offer to God something that He didn't ask for. And we should be thankful that God didn't ask us to worship Him with a method that he didn't equip us all with. We might not all have equally talented voices, but we all have voices. Those who have added instrumental music to the worship service have done so without any scriptural authority.