72 Grk “Truly, truly, I say to you.”
73 Or “who commits.” This could simply be translated, “everyone who sins,” but the Greek is more emphatic, using the participle ποιῶν (poiōn) in a construction with πᾶς (pas), a typical Johannine construction. Here repeated, continuous action is in view. The one whose lifestyle is characterized by repeated, continuous sin is a slave to sin. That one is not free; sin has enslaved him. To break free from this bondage requires outside (divine) intervention. Although the statement is true at the general level (the person who continually practices a lifestyle of sin is enslaved to sin) the particular sin of the Jewish authorities, repeatedly emphasized in the Fourth Gospel, is the sin of unbelief. The present tense in this instance looks at the continuing refusal on the part of the Jewish leaders to acknowledge who Jesus is, in spite of mounting evidence.
74 See the note on the word “slaves” in .

In other versions

Jesus answered them, “Truly, truly, I say to you, everyone who practices sin is a slave to sin.

Jesus replied, “Very truly I tell you, everyone who sins is a slave to sin.

Jesus responded, “Truly I tell you, everyone who commits sin is a slave of sin.

Jesus replied, “I tell you the truth, everyone who sins is a slave of sin.

Jesus replied to them, “Truly, truly I say to you, that everyone who commits sin is a slave of sin.

Jesus answered them, Verily, verily, I say unto you, Whosoever committeth sin is the servant of sin.

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