'Knocks' in the Bible

And if he knocks out a tooth of his male or female slave, he shall let him go free on account of his tooth.

For everyone who asks receives, and he who seeks finds, and to him who knocks it will be opened.

For everyone who asks, receives; and he who seeks, finds; and to him who knocks, it will be opened.

Be like men who are waiting for their master when he returns from the wedding feast, so that they may immediately open the door to him when he comes and knocks.