'Open' in the Bible

"To the angel of the church in Philadelphia write the following: "This is the solemn pronouncement of the Holy One, the True One, who holds the key of David, who opens doors no one can shut, and shuts doors no one can open:

I know your deeds. (Look! I have put in front of you an open door that no one can shut.) I know that you have little strength, but you have obeyed my word and have not denied my name.

After these things I looked, and there was a door standing open in heaven! And the first voice I had heard speaking to me like a trumpet said: "Come up here so that I can show you what must happen after these things."

And I saw a powerful angel proclaiming in a loud voice: "Who is worthy to open the scroll and to break its seals?"

But no one in heaven or on earth or under the earth was able to open the scroll or look into it.

So I began weeping bitterly because no one was found who was worthy to open the scroll or to look into it.

Then one of the elders said to me, "Stop weeping! Look, the Lion of the tribe of Judah, the root of David, has conquered; thus he can open the scroll and its seven seals."

They were singing a new song: "You are worthy to take the scroll and to open its seals because you were killed, and at the cost of your own blood you have purchased for God persons from every tribe, language, people, and nation.

He held in his hand a little scroll that was open, and he put his right foot on the sea and his left on the land.

Then the voice I had heard from heaven began to speak to me again, "Go and take the open scroll in the hand of the angel who is standing on the sea and on the land."