Holiness is a quality of perfection, sinlessness, and inability to sin that is possessed by God alone. As Christians, we are called to be holy (1 Pet. 1:16). But this does not refer to our nature. Instead, it is a command of our practice and thought. We are to be holy in obedience (1 Pet. 1:15). God has made us holy through his Son Jesus (Eph. 1:4; 1 Pet. 2:9).