“…Christianity refuses to be regarded as a mere means to a higher end. Our Lord made that perfectly clear when He said: ‘If any man come to me, and hate not his father and mother…he cannot be my disciple’ (Lk 14:26). Whatever else those stupendous words may mean, they certainly mean that the relationship to Christ takes precedence of all other relationships, even the holiest of relationships like those that exist between husband and wife and parent and child. Those other relationships exist for the sake of Christianity and not Christianity for the sake of them. Christianity will indeed accomplish many useful things in this world, but if it is accepted in order to accomplish those useful things it is not Christianity. Christianity will combat Bolshevism; but if it is accepted in order to combat Bolshevism, it is not Christianity: Christianity will produce a unified nation, in a slow but satisfactory way; but if it is accepted in order to produce a unified nation, it is not Christianity: Christianity will produce a healthy community; but if it is accepted in order to produce a healthy community, it is not Christianity: Christianity will promote international peace; but if it is accepted in order to promote international peace, it is not Christianity. Our Lord said, ‘Seek ye first the Kingdom of God and His righteousness, and all these things shall be added unto you.’ But if you seek first the Kingdom of God and His righteousness in order that all those other things may be added unto you, you will miss both those other things and the Kingdom of God as well.”

J.Gresham Machen, Christianity and Liberalism, pp. 127-128.