Behold, I stand at the door and knock. If any man hear my voice and open the door, I will come in unto him and will sup with him, and he with me.

I know your works. Behold, I have set before thee an open door, and no man can shut it, for thou hast a little strength, and hast kept my sayings: and hast not denied my name.

After this I looked, and behold a door was open in heaven, and the first voice which I heard, was as it were of a trumpet talking with me, which said, "Come up hither, and I will show thee things which must be fulfilled hereafter.