Acts 12:13

And when he had knocked at the door of the entry, a maid came to listen, by name Rhoda;

Luke 13:25

From the time that the master of the house shall have risen up and shall have shut the door, and ye shall begin to stand without and to knock at the door, saying, Lord, open to us; and he answering shall say to you, I know you not whence ye are:

John 18:16-17

but Peter stood at the door without. The other disciple therefore, who was known to the high priest, went out and spoke to the porteress and brought in Peter.

Acts 12:16

But Peter continued knocking: and having opened, they saw him and were astonished.

Treasury of Scripture Knowledge

Summary

And as Peter knocked at the door of the gate, a damsel came to hearken, named Rhoda.

Bible References

Knocked

Acts 12:16
But Peter continued knocking: and having opened, they saw him and were astonished.
Luke 13:25
From the time that the master of the house shall have risen up and shall have shut the door, and ye shall begin to stand without and to knock at the door, saying, Lord, open to us; and he answering shall say to you, I know you not whence ye are: