Δουλοι θεου, servants of God. The apostle Paul calls himself in Romans 1:1, “a servant of Jesus Christ.” Later on he calls Christians the servants of righteousness. These three words (servants of God), almost entirely summarize what is our calling as Christians. This is our calling as those who are saved by the suffering of Christ in hell. We are to be the servants of God! That means that we follow His law and commandments as any servant would follow his master.
This following is not simply a knowledge and confessing that God is Lord. That is what the devils do, “Thou believest that there is one God; thou doest well: the devils also believe, and tremble.” (James 2:19) Nor is it simply showing up to church on Sunday, and doing what all your other Christian peers may do. Christ says in Matthew 7:21 – 23, “Not every one that saith unto me, Lord, Lord, shall enter into the kingdom of heaven; but he that doeth the will of my Father which is in heaven. Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works? And then will I profess unto them, I never knew you: depart from me, ye that work iniquity.” Those that were saying Lord, Lord were calling emphatically out to God and calling Him Master. This does not make them Christian though! What separates a true Christian from a false Christian is the way he walks his life. When you look at most Christians in the world today, what separates them from the world, besides them confessing Lord, Lord? Most Christians love the music of the world, the movies of the world, and the lusts and pleasures of the world. This is not Christianity! Christ says that you will know a true Christian by the fruits that they bear.
Thus, being a servant of God means that we forsake all else that is sinful and wicked and seek to worship God in our life. It does not mean holding onto a bit of the world, it does not mean hanging onto the apostate culture of the world. It means being a servant of righteousness; loving what God loves and hating what God hates. It means bearing the fruits of righteousness. It means ascribing ourselves to the law of God so that we may show Him all thanks and honour for His salvation. Essentially it is hating all that the world loves and esteems. All this can only be done by the grace of God, but doing this is what makes a servant of God.
This then is the message which we have heard of him, and declare unto you, that God is light, and in him is no darkness at all. If we say that we have fellowship with him, and walk in darkness, we lie, and do not the truth: But if we walk in the light, as he is in the light, we have fellowship one with another, and the blood of Jesus Christ his Son cleanseth us from all sin. (1 Jn 1:5–7).