Those who wrote scripture 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? (Ps 119:125) How can we tell?
Well, 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 your attitude towards Christ?
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 do 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, are you simply living life for yourself, with little regard for whether you’re pleasing God or not? That’s not much different; those who live like this are Christ’s enemies. (Php 3:18-19).
Those who neglect to obey Christ don’t love Him (Jn 14:21), and those who don’t love Jesus Christ 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 won’t just be empty words, it will express the reality of our daily lives. As we choose Christ as Master we are choosing to be His slaves, to gladly do for Him whatever He bids us do. (Lk 6:46) We’re members of Christ (1Co 12:27), part of His very Body; He’s living in and through us — we’re His hands and eyes and feet on Earth: called, chosen and faithful. (Re 17:14)
But it’s also true that our very best may not actually be very good at all. If we’ve not been careful to follow after holiness, purging our hearts and minds of lies and deception, much of what we offer to Christ may, in fact, be wood hay and stubble, consumed in the fire of God’s discerning judgement. (1Co 3:12-13) Pride, ignorance 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)