The Lord, in the simplest terms, is love itself expressed as wisdom itself. In philosophic terms, love is the Lord's substance and wisdom is His form. Of course, we feel the Lord's love and hear His wisdom in many different ways, depending on our state in life and how receptive we are. That's why the Lord has so many different names in the Bible, and is referred to in so many different ways.
Of all the names, though, “Jehovah” is the most special and most holy, because it refers to the Lord in terms of love, referring to his substance, love itself. Generally, then, we find “Jehovah” used within the context of a church that worships Him, and in connection with people who are growing in their affection for being.