Adverb oukoun (therefore then) in the Gospels-Acts

(Translation from NRSV with a few modifications for a more literal meaning)

John

18: 37Pilate asked him, "Therefore then (oukoun) you are a king?" Jesus answered, "You say that I am a king. For this I was born, and for this I came into the world, to testify to the truth. Everyone who belongs to the truth listens to my voice."