God, who is infinite and eternal, who created the heavens and the earth, can only be approached on His own terms. This is true of salvation as well as worship. God has redeemed a people out of fallen humanity to serve, worship and glorify Himself. God has taken the initiative and saved a people dead in trespasses and sins through the sacrificial death and sinless life of Jesus Christ. Professing Christians acknowledge that the only way to be saved is by Jesus Christ.1 They reject the notion that there are many paths that lead to God. But when it comes to worshiping God, most professing Christians believe that man can do almost anything he pleases as long as it is not blatantly sinful. The purpose of this book is to prove from Scripture that God has set forth a principle regarding worship that completely eliminates human autonomy from worship. God has not left worship to the caprice of man. God, who is the object of worship, tells His people how to worship. Once the regulative principle of worship has been established from Scripture, we will turn our attention to the use of musical instruments in public worship.