Blessed art thou, O Lord - Blessed art thou as the author of such a law. This language of benediction or doxology is an outbreak of feeling or adoration in view of such a law - so good, so holy, so suited to direct and guide man. The mind is full of the subject; and the lips give vent to the feeling of gratitude and joy that such a law had been revealed to people.
Teach me thy statutes - Make me more and more acquainted with a law so pure, so rich, so valuable.