It is called the gift of knowledge in the Word. When any believer is given to speak by the Holy Spirit, it is usually such, unless it is prophecy, which I believe is already covered in the Word.
As for having this, I have been moved by the Spirit several times n my day, but it is not something I turn on and off, the same goes for any gift of the Holy Spirit. God bless you with such.
Oh, I forgot, yes threads get old but they ae never as old as what is written for us to learn, and again, that by the Holy Spirit.