Jesus standing at the door

Revelation 3:20 New International Version

20 Here I am! I stand at the door and knock. If anyone hears my voice and opens the door, I will come in and eat with that person, and they with me.
O Jesus, thou art standing,
outside the fast closed door,
in lowly patience waiting
to pass the threshold o’er:
shame on us, Christian brothers,
his Name and sign who bear,
O shame, thrice shame upon…