Luke 13:24-25

24“Strive to enter through the narrow door [force aside unbelief and the attractions of sin]; for many, I tell you, will try to enter [by their own works] and will not be able.

25Once the head of the house gets up and closes the door, and you begin to stand outside and knock on the door [again and again], saying, ‘Lord, open to us!’ then He will answer you, ‘I do not know where you are from [for you are not of My household].’