Our Primary Teacher is the Holy Spirit - He teaches us all things and reminds us of all that Jesus said to us, John 14:26. His bio is too long to include here but here are a few pointers to His omnipotence.
He is the Baptizer, the Comforter, the Great Counselor; He speaks through believers and guides them. He helps us when we do not know what we should pray for. He gives us the bible study outlines from which we teach. He fills all who desire and His gifts often overflow in their lives as signs and wonders. He gives boldness for ministry and when our journey on earth is complete, the Holy Spirit will take us home to Heaven. Thank you, Holy Spirit for all you do!