He was not the light, but [came] that he might bear witness of the light.

He¹ wasª° notª that² Light,ª butª [was sent] toª bear witnessª° ofª that Light.ª

Hee¹ wasª° notª that² light,ª butª [was sent] toª beare witnesseª° ofª that light.ª

He was not the Light himself, but came to testify concerning the Light.

He was not himself the light, but [came] to bear witness concerning the light.

οὐκ ἦν ἐκεῖνος τὸ φῶς, ἀλλ' ἵνα μαρτυρήσῃ περὶ τοῦ φωτός.

Not it-was the-one-thither the-one a-light, other so it-might-have-witnessed-unto about of-the-one of-a-light.