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.

54. We can now see from this that Jehovah, who is the Lord from eternity, spoke through the prophets and that where it speaks of the Holy Spirit, it is he himself.

Therefore, God is one in person and in essence, and he is the Lord.