There are no rules, no best boundaries, no known grammatical structure, no known formulae, no books on its lexis, and of all no known accurate speaker. Simply open your mouth and utter it as it comes to you. That is speaking in tongues for you. I love to speak in tongues. In fact 95% of my prayer at any time, and since all time (when I met the Saviour Jesus Christ who is seated at the right hand of the Father) has been in glossa lalia. I cannot tell exactly how effective this is, but one thing I have known, it sure feels sweet to my stomach, gives peace to my heart, and life's troubles are easier to handle. Speaking in tongues comes in two observable packages, quick charge and long charge. Quick charge is required when you need to tackle impromptu issues, and long charge is useful when you need to systematically over time deal with issues.
Before I go further, it is important at this time to not mix up terminologies. Where glossa lalia is concerned, there are many confusions, even among experts in the topic, something we readily always forget. So, let's iterate it.
There is a difference between:
1. Speaking in Tongues, and
2. Praying in Tongues.
What is the difference?
SPEAKING IN TONGUE - is when you make a prophetic declaration in a speech-like manner, especially when addressing a crowd, or during personal prayer (only at a certain point in personal prayer, and it usually goes with an interpretation, and mostly it goes unnoticed).
"For he that speaketh in an unknown tongue speaketh not unto men, but unto God: for no man understandeth him; howbeit in the spirit he speaketh mysteries." 1 Corinthians 14:2 KJV
