Particle ara (then) in the Gospels-Acts

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

Matthew

7: 20Then (ara) you will know them by their fruits.
12: 28But if it is by the Spirit of God that I cast out demons, then (ara) the kingdom of God has come to you.
17: 26When Peter said, "From others," Jesus said to him, "Then (ara) the children are free.
18: 1At that time the disciples came to Jesus and asked, "Who is then (ara)the greatest in the kingdom of heaven?"
19: 25When the disciples heard this, they were greatly astounded and said, "Then (ara) who can be saved?"
19: 27So Peter said in reply, "Look, we have left everything and followed you. What then (ara) will we have?"
24: 45"Who then (ara) is the faithful and wise slave, whom his master has put in charge of his household, to give the other slaves their allowance of food at the proper time?

Mark

4: 41And they were filled with great awe and said to one another, "Who then (ara) is this, that even the wind and the sea obey him?"
11: 13Seeing in the distance a fig tree in leaf, he went to see whether perhaps he would find then (ara)anything on it. When he came to it, he found nothing but leaves, for it was not the season for figs.

Luke

1: 66All who heard them pondered them and said, "What then (ara) will this child become?" For, indeed, the hand of the Lord was with him.
8: 25He said to them, "Where is your faith?" They were afraid and amazed, and said to one another, "Who then (ara) is this, that he commands even the winds and the water, and they obey him?"
11: 20But if it is by the finger of God that I cast out the demons, then (ara) the kingdom of God has come to you.
11: 48Then (ara) you are witnesses and approve of the deeds of your ancestors; for they killed them, and you build their tombs.
12: 42And the Lord said, "Who then (ara) is the faithful and prudent manager whom his master will put in charge of his slaves, to give them their allowance of food at the proper time?
22: 23Then (ara) they began to ask one another which one of them it could be who would do this.

Acts

8: 22Repent therefore of this wickedness of yours, and pray to the Lord that, if possible then (ara), the intent of your heart may be forgiven you.
11: 18When they heard this, they were silenced. And they praised God, saying, "Then (ara) God has given even to the Gentiles the repentance that leads to life."
12: 18When morning came, there was no small commotion among the soldiers over what had become then (ara)of Peter.
17: 27so that they would search for God and then (ara)grope for him and find him - though indeed he is not far from each one of us.
21: 38Then (ara) you are not the Egyptian who recently stirred up a revolt and led the four thousand assassins out into the wilderness?"