"a door, gate" (Eng., "door" is connected), is used (a) literally, e.g., Matthew 6:6; 27:60; (b) metaphorically, of Christ, John 10:7,9; of faith, by acceptance of the Gospel, Acts 14:27; of "openings" for preaching and teaching the Word of God, 1 Corinthians 16:9; 2 Corinthians 2:12; Colossians 4:3; Revelation 3:8; of "entrance" into the Kingdom of God, Matthew 25:10; Luke 13:24,25; of Christ's "entrance" into a repentant believer's heart, Revelation 3:20; of the nearness of Christ's second advent, Matthew 24:33; Mark 13:29; cp. James 5:9; of "access" to behold visions relative to the purposes of God, Revelation 4:1 .
Note: For the phrase "that kept the door," thuroros, John 18:16,17 ("porter" in Mark 13:34; John 10:3 ), see PORTER.