Roger ... sigh ... I know I am wasting my time here. But for the sake of the small infinitesimal microscopic near non-existent chance that you will actually listen and consider, let me answer your repeated claim that with no understanding personal tongues are useless.
First, let's context 1 Cor 14. We have to acknowledge that prophecy is different than a 'personal' tongue. Both are clearly delineated in 1 Cor 14. (I have a color coded blog post illustrating the differences, but haven't actually looked for blogs in the new format and can't find it at the moment. But you've seen - and ignored - it before). Prophecy is done in public with an interpretation. Personal is spoken in private directly between you and God. There is a time and place for each, and while we should all seek to do them, it's better we not do them at all than violate those time and place restrictions. Because violation of those time and place restrictions result in ... well, you.
That is the whole lesson that is the context of 1 Cor 14.
1 Cor 14:
13 For this reason the one who speaks in a (personal) tongue should pray that they may interpret what they say.
How simple is this? Ask God to reveal what you are praying about. At first I didn't know. I asked Him to tell me. He did, and also explained 1 Cor 14:15 -
15 So what shall I do? I will pray with my spirit, but I will also pray with my understanding; I will sing with my spirit, but I will also sing with my understanding.
Again, this is not some mythical thing. I pray in English and I pray in my tongue. I start out with "Lord, Roger doesn't understand, help him understand, help me be clear for him, and so on, speaking all the things
my mind can think about that might bind you and help you open up and find clarity. BUT - there are things going on with you that my mind doesn't know about.
How do I speak to those things? That's when the Holy Spirit takes over, praying about the mysteries that surround you that I don't know about. In my heart, in my mind, oh I understand that I am praying for you. It's just in way that lets me speak things in the Name of Jesus that I don't know about.
And whoo-eee, are there a lot of them
In all of us
Ok, I know you're not going to lissen. But like CS1 pointed out, for the sake of others who read along, there it is.