John Gill - Exposition
John Gill
And as Peter knocked at the door of the gate, c. The lesser door in the great gate, or the door of the porch through which they entered into the house. So the Jews distinguish between פתח, "the door", and שער, "the gate" see Judges 18:16 where the Septuagint use the same words as here. Kimchi (h) says, "xtp, "the door" is what is of the gate, without the folding doors; for all is called שער, "the...