ישעיהו נז:ח פירוש: רש״י ואבן עזרא

And behind the door and the doorpost you have directed your thoughts Since he compares her to an adulterous woman, for whom her paramours look and wait before the door of her house, while she, lying beside her husband, directs her heart and her thoughts to the door and the doorpost, how she will open the door and come out to them.

Behind the doors also, etc., that is, also privately.

for while with Me, you uncovered [us] and went up You were lying beside Me, and you removed the cover with which we were covered together, and you went up from beside Me.