'Knock' in the Bible

“Ask, and it will be given to you; seek, and you will find; knock, and it will be opened to you.

“So I say to you, ask, and it will be given to you; seek, and you will find; knock, and it will be opened to you.

Once the head of the house gets up and shuts the door, and you begin to stand outside and knock on the door, saying, ‘Lord, open up to us!’ then He will answer and say to you, ‘I do not know where you are from.’

Behold, I stand at the door and knock; if anyone hears My voice and opens the door, I will come in to him and will dine with him, and he with Me.