These are more commonly known as ‘tongues.’ Here some of the biblical basics.
Questions and Answers about Spirit-Inspired Languages
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Tag Archives: Are tongues for today?
Are ‘Tongues’ the Sign of Baptism with Spirit in Acts?
What do five key passages in Acts say about prayer languages, commonly called ‘tongues,’ being the sign of the empowerment of the Spirit?
Should We Call It ‘Tongues’?
The Greek texts actually call it ‘languages.’ What should we call it today?
Dr. Jim's Essential Bible Teaching 