In the Alpha course, which we are doing....again....(about 5th time for me as facilitator), I was caught once more by the video where Rev 3 is quoted in connection with Holman Hunt's painting of the person at the door.
This is connected with Christ seeking to bring salvation to a person.
But not so. Read the text carefully: it is in the passage where the church at Laodicea is being remonstrated for being luke warm and self-satisfied.
Christ is seeking to be part of that church again. It is not a reference to salvation, but restoration.