'Knocks' in the Bible

If he knocks out the tooth of his male or female slave, he must let the slave go free in compensation for his tooth.

For everyone who asks receives, and the one who searches finds, and to the one who knocks, the door will be opened.

For everyone who asks receives, and the one who searches finds, and to the one who knocks, the door will be opened.

You must be like people waiting for their master to return from the wedding banquet so that when he comes and knocks, they can open the door for him at once.