Praying in tongues is where I think most people speak in tongues.
One night when I was on my way home from school I felt a heavy heart for one of my son-in-laws and just began to pray in tongues. I did not know what I was praying for but I felt an intense urgency to pray for him so I went with it.
The next day my son-inlaw had a very difficult day. He was on the verge of suicide. He has had some severe bondages in his life and we are praying for him constantly but that day was more unusual than normal.
When I heard what was happening that next day, I, of course, began to pray for him but I also realised that I had been praying in the Spirit the night before for him, so the angels had already been dispatched to assist him.
All went well. He had some difficult days but he did not choose to take his life. God is still working with him and he has my son in-law in his loving arms walking him through life.
Also, sometimes when I am listening to, and singing along with, Praise and Worship music in the car, I just start praising his name and then I start praying and praising him in the Spirit. Sometimes there just are not enough words or the right words to praise him in our earthly language. He is sooooo awesome!!!!
Thank you Jesus!