'Gates' in the Bible

having a great and high wall; having twelve gates, and at the gates twelve angels, and names inscribed, which are those of the twelve tribes of the sons of Israel.

On the east three gates; and on the north three gates; and on the south three gates; and on the west three gates.

And he that spoke with me had a golden reed as a measure, that he might measure the city, and its gates, and its wall.

And the twelve gates, twelve pearls; each one of the gates, respectively, was of one pearl; and the street of the city pure gold, as transparent glass.

And its gates shall not be shut at all by day, for night shall not be there.

Blessed are they that wash their robes, that they may have right to the tree of life, and that they should go in by the gates into the city.