BIBLE HISTORY DAILY:
Speaking in Tongues in the Bible. What happened at Pentecost? (Megan Sauter). This essay is an introduction to Ben Witherington's 2015
BAR article, "Speaking in the Tongues of Men or Angels?" The article itself is behind the subscription wall.
Also, here's a
PaleoJudaica post from some years ago which also deals with the speaking in tongues at Pentecost.
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