We are not sure we can 'explain' this gift. Who, after all, can explain a totally supernatural experience? We suggest you don't concern yourself with understanding your experience but simply embrace it and allow the Lord to bless you by it. Paul wrote in 1 Corinthians 14:15, 'I will sing with the spirit, and I will also sing with the understanding.' All we need to know is that what you have experienced is sanctioned by the Word of God. Enjoy it!