Xenoglossy is known as the ability to speak a language with no history of ever having learnt it.
In our religious literature, especially in Pentecostal and Charismatic movements, this ability is referred to as “speaking in tongues’. It is regarded as evidence of the presence of the Holy Spirit. The word itself is derived from Greek xenos, stranger or foreigner, plus glossa, language; also known as xenoglossia.
During my journey of decades when I sought to unravel the ‘truth’, I met a great mystic. He revealed to me that in almost all spiritual literature of varied cultures ‘speaking in tongues ‘ is recorded. In a deep meditative state, he could do it as well.
I also happened to witness it during trance states of people. The mystic informed me that such paranormal trance states are not ‘awakening’. They are just trance states. They are not signs of spiritual advancement. Speaking in tongues during inner awakening is different.
In Australia, many years ago, I witnessed a person who could enter into such a state and have complete conversations in languages which he had never learnt. I have seen mediums do it. Invoking spirits of dead people. A person in Benaras, India suddenly started to speak in fluent Spanish, then Russian when in self induced trance.
Parapsychology also recognises this phenomenon and researches into it.
My experience and reading of many scriptures has led me to the following observations
If you witness it “on demand” from someone and in public. Please know that it is either a psychological issue or a spirit issue.
Some people also remember language from a past life during regression.
Where it is spiritual, it cannot be in full public view. Plus, in spiritual practices, the ‘speaking in tongues’ is not a complete conversation in a foreign language. It happens as few almost unintelligible words. Sometimes the words can make sense, but it isn’t xenoglossy.
A number of ‘pseudo sadhus’ do it to attract followers and other people. These are invariably cases of the dark art and should be avoided.
For the true spiritual significance, please do refer to the Divine scriptures where the true and false states are elucidated in detail.