60. That the stone tablets on which the law was written were called the Tablets of the Covenant, and that because of them the Ark was called the Ark of the Covenant, the law itself being the covenant, see Numbers 10:33; Deuteronomy 4:13, 23, 5:2-3, 9:9; Joshua 3:11; 1 Kings 8:19, 21; Revelation 11:19. And many other places.

The law was called a covenant because a covenant symbolizes conjunction. We are accordingly told regarding the Lord that He would be “as a covenant to the people” (Isaiah 42:6, 49:8). He is called, too, “the Messenger of the covenant” (Malachi 3:1), and His blood “the blood of the covenant” (Matthew 26:28, Zechariah 9:11, Exodus 24:4-10). That is why the Word is called the Old Covenant and New Covenant.

Covenants are also made as testaments of love, friendship, and fellowship, thus for the sake of conjunction.

Heaven" and "heavens" are used many times in the Bible, with a couple of variations of meaning. Sometimes it is relatively literal, including times when the Lord is identified with it (“Our Father, who art in the heavens,” for instance), meaning heaven as the eternal home for people who chose to do what is good in this life and let the Lord lead them to a love of being good. In other references, particularly when it is paired with “earth” or other lesser ideas (“In the beginning God created the heavens and the earth,” for instance), “heaven” or “heavens” means our internal life as opposed to our external life. In a way, these two meanings are really the same. If you think about the importance of your deepest thoughts and feelings, you can see that they are the “real” you, much more so than your body is. The relationship between the spiritual world and the natural world is similar; the spiritual world is the “real” one, and controls the natural world the same way our thoughts and feeling control our actions. So in both cases, “heaven” describes a deeper reality that we will enter fully after we die.