when.

Acts 16:8
So they passed by Mysia and went down to Troas.

Acts 20:1-6, 8
When the uproar had ended, Paul sent for the disciples. After he had encouraged them, he said goodbye to them and left for Macedonia. . . .

and a.

Acts 14:27
When they arrived, they gathered the church together and reported all that God had done through them, and how He had opened the door of faith to the Gentiles.

1 Corinthians 16:9
because a great door for effective work has opened to me, even though many oppose me.

Colossians 4:3
as you pray also for us, that God may open to us a door for the word, so that we may proclaim the mystery of Christ, for which I am in chains.

Revelation 3:7, 8
To the angel of the church in Philadelphia write: These are the words of the One who is holy and true, who holds the key of David. What He opens, no one will shut; and what He shuts, no one will open. . . .