3 Bible Verses about Open Doors

And to the angel of the church of Philadelphia write, These things saith the Holy, the True One, he that hath the key of David, he that openeth, and none shutteth, and shutteth and none openeth. I know thy works, (behold I have given before thee an opened door, none can shut it) that thou hast a little strength, and hast kept my word, and hast not denied my name.

For a great and effectual door is opened to me, and there are many adversaries.

Now when I came to Troas, to preach the gospel of Christ, and a door was opened to me in the Lord,