Those who wrote scripture generally claimed to be slaves of Christ, to be His loyal servants. (Ro 1:1) Sounds admirable, even holy, so should we be saying the same? Or is it a bit presumptuous for normal people like ourselves to do so? How can we tell?
Well, let’s think about it for a moment. A loyal servant is always seeking to please their master, never deliberately or carelessly disobeying, consistently doing their best to serve, looking for ways to make their master as happy as possible. Is that you?
If not, if there are areas in your life that are off-limits for God, where you are able to obey Him but are knowingly and deliberately refusing to to so as a manner of life, then, no, you are not a servant of God. This defines one as a child of disobedience. (Ep 2:2-3) Or, if you are simply living life for yourself, with little regard for whether you are pleasing God in your life or not, it is the same; those who live like this are Christ’s enemies. (Php 3:18-19). Those who negelct to obey Christ don’t love Him (Jn 14:21), and this means they don’t belong to Him (1Co 16:22)
So, yes, every child of God should heartily claim to be a servant of Jesus Christ (Col 3:24), and this will express the reality of our daily lives. We’re members of Christ (1Co 12:27); He lives in and through us — we’re His hands and feet on Earth: called, chosen and faithful. (Re 17:14)
But it’s also true that trying our best may not be very good at all. If we’ve not been careful to purge our hearts of lies and deception, much of what we offer in Christ may, in fact, be wood hay and stubble, consumed in the fire of God’s discerning judgement. (1Co 3:12-13) Pride and arrogance can pollute everything we do, such that we’re largely ineffective for Christ.
Serve the Lord with fear, and rejoice with trembling (Ps 2:11), continually asking God to show us His Way (Ps 25:4), revealing Himself until we might see Him as He is (1Jn 3:2), and we’re transformed into His image. (2Co 3:18)