Covenant theology is a very significant class that I took in the global class by remote taught by Dr Ligon Duncan. To say that it is a central theme of reformed theology is an understatement because it really encompasses the relational outworking of the divine sovereign almighty God with his creation human beings, whom He loved even before the foundation of the world.

Ephesians 1:3–5 (ESV)

³ Blessed be the God and Father of our Lord Jesus Christ, who has blessed us in Christ with every spiritual blessing in the heavenly places, ⁴ even as he chose us in him before the foundation of the world, that we should be holy and blameless before him. In love ⁵ he predestined us for adoption to himself as sons through Jesus Christ, according to the purpose of his will,

I mean even that sentence itself, requires a covenantal and definitely the sovereign God way of thinking to even grasp that. It really is a way God relates to his chosen ones through a covenant whereby he expressed it well most well during his encounter with Abraham in genesis 15. In genesis 15 God asked Abraham to cut some animals into carcasses and spread it on the floor and how he’s going to establish a covenant with Abraham:

Genesis 15:7–21 (ESV)

⁷ And he said to him, “I am the Lord who brought you out from Ur of the Chaldeans to give you this land to possess.” ⁸ But he said, “O Lord God, how am I to know that I shall possess it?”

The powerful thing about this passage how God revealed himself to Abraham when Abraham asked innocent naive question that, ” How I know that I will possess the land and have thousands of children when I am childless.” And instead of answering him directly God did the following.

⁹ He said to him, “Bring me a heifer three years old, a female goat three years old, a ram three years old, a turtledove, and a young pigeon.” ¹⁰ And he brought him all these, cut them in half, and laid each half over against the other. But he did not cut the birds in half. ¹¹ And when birds of prey came down on the carcasses, Abram drove them away. ¹⁷ When the sun had gone down and it was dark, behold, a smoking fire pot and a flaming torch passed between these pieces.

God told Abraham to bring a heifer and a female goat and a ram a total dove and a young pigeon and cut them in half and lay on the ground and when the sun had gone down it was dark as smoking fire pot, and a flaming torch passed between these pieces. Do you know what is this flaming torch? The answer is God himself passed between these pieces of Caucasus on the ground. The question is what does it mean? In the olden days at those time it is the culture and custom of that time the vassal and the suzer in making a covenant of promise, the lesser party in this case is Abraham should pass between the carcasses meaning to say that if he breaks the covenant, he will be torn apart like the animals’ carcasses on the ground. However in this covenant making ceremony, God actually put himself in the lesser party of vassal and passed between the Caucasus in the form of a flaming torch.

What God is saying is I will pass between the carcasses and if I break the covenant I would be torn like the carcasses. In fact this is a prophetic picture that’s going to be fulfilled by the son of God Jesus Christ when he was torn apart on the cross and died because humans broke the covenant with God, or the children of Abraham broke the covenant with God. And instead of Abraham being torn apart all the children of Abraham, which is us today, God sent his son to fill in the position as a Lamb of God being sacrificed. This is precisely what happened when God passed between the carcasses in the field in the form of a flaming torch because he is prophetically saying one day God will be torn as a God man to fulfill this covenant that I’m making with Abraham and his children.

To me this is one of the most moving pictures of who God is and what God has done for us through the Abrahamic covenant. I would never forget this story and this biblical exegesis by Dr Duncan on this event that I have used it numerous times in my preaching, and it has impacted my life, and this is part of a covenant theology class.