1 Corinthians 16:9

2 Corinthians 2:12 NIV
Now when I went to Troas to preach the gospel of Christ and found that the Lord had opened a door for me,

Acts 14:27 NIV
On arriving there, they gathered the church together and reported all that God had done through them and how he had opened a door of faith to the Gentiles.

Colossians 4:3 NIV
And pray for us, too, that God may open a door for our message, so that we may proclaim the mystery of Christ, for which I am in chains.