Bible. Servant (δοῦλος)
Of whom a man is overcome, of the same is he brought in bondage
While they promise them liberty, they themselves are the servants of corruption.
18 For when they speak great swelling words of vanity, they allure through the lusts of the flesh, through much wantonness, those that were clean escaped from them who live in error.
18 ὑπέρογκα γὰρ ματαιότητος φθεγγόμενοι δελεάζουσιν ἐν ἐπιθυμίαις σαρκὸς ἀσελγείαις τοὺς ὄντως ἀποφύγοντας τοὺς ἐν πλάνῃ ἀναστρεφομένους
19 While they promise them liberty, they themselves are the servants of corruption: for of whom a man is overcome, of the same is he brought in bondage. Jhn 8, 34. Rom 6, 16.
19 ἐλευθερίαν αὐτοῖς ἐπαγγελλόμενοι αὐτοὶ δοῦλοι ὑπάρχοντες τῆς φθορᾶς ᾧ γάρ τις ἥττηται τούτῳ καὶ δεδούλωται
16 Know ye not, that to whom ye yield yourselves servants to obey, his servants ye are to whom ye obey; whether of sin unto death, or of obedience unto righteousness? Mat 6, 24. Jhn 8, 34. 2Pe 2, 19.
17 But God be thanked, that ye were the servants of sin, but ye have obeyed from the heart that form of doctrine which was delivered you.
18 Being then made free from sin, ye became the servants of righteousness. Jhn 8, 32. Gal 5, 1.
Everyone who sins is a slave to sin
34 Jesus answered them, Verily, verily, I say unto you, Whosoever committeth sin is the servant of sin. 2Pe 2, 19. Rom 6, 16.