When Muslims walled up the two portals of the eastern gate in the ninth century, Christians took note of the prophecy in Ezekiel 44:1-2: “This gate shall be shut; it shall not be opened, and no one shall enter by it, for the LORD God of Israel has entered by it; therefore it shall be shut.”
The Bible says, “When the day of Pentecost had come, they were all together in one place” (Acts 2:1). Where was that one place? Tradition places the receiving of the Spirit on Pentecost in the upper room of Acts 1. The disciples met in the upper room after the ascension, but ten days elapsed between the ascension and the events described in Acts 2.
In biblical Hebrew, “tongue” is idiomatic for “language.” Hebrew uses the word “lip” in a similar fashion. The Hebrew word “lip (safah, שפה)” can also mean a language. If Luke had chosen to use the word “lips” instead of “tongues” in Acts 2:4, Pentecostal Christians today would seek after the gift of speaking in lips.