How the “God of the Old Testament” vs. God of the New Testament Idea Might Inform Our Politics

We should have the same mindset as Jesus in doing politics.


In the short YouTube segment, Are There Two Different Gods in the Old and New Testaments? (Part Two), Gareth Black does a good job describing why God appears differently in the Old Testament than in the New Testament. There is one God, but He relates differently to people.

I have explored this dichotomy before, but I don’t want to focus on it here, other than to set the stage for what I really want to lay out. The difference in the way God related to people at different times might just become a guide for Christians doing politics.

First, we know the orthodox view: that the God of the Old Testament is the same God revealed in the New Testament through Jesus. While, heretics abound, this is the accepted view. Still, it sometimes seems like a tough pill to swallow.

God in the Old Testament focuses on commandments. He seems full of judgment and anger. The Ten Commandments God gave Moses became legion with all the ceremonial laws, food laws, cleansing laws, and dozens of other laws people were commanded to follow.

In the New Testament, it may seem like Jesus paid “lip service” to the laws (saying he didn’t come to abolish the Law), because he simplified them into just two commandments: love God and love your neighbor. Easy, right?

At the same time, Jesus seemed to turn up the heat. In the same discourse in which he said he didn’t come to abolish the law, he told his audience the following:

  • It’s not enough to refrain from murdering people; harboring disdain in your heart is like committing murder;
  • It’s not enough to refrain from committing adultery; lusting after a person in your heart is like committing adultery.

He said more than that, but you get the point. So, it’s as simple as loving God and neighbor. At the same time, it’s as difficult as controlling what is in your heart!

To say that Jesus went easier on people is to ignore these things that he said. At the same time, Jesus confronted the men who wanted to stone the woman caught in adultery and saved her. He said he didn’t condemn her (though he also told her, “Go and sin no more.”)


What in the world is going on? If it seems difficult to sort out what is going on here, join the club.

Black offers one explanation in the video. He says God relates to people differently at different times, just as a parent relates differently to their children at different times. Parents tend to be strict with little children, imposing lots of rules about bedtimes, eating, watching TV, playing video games, doing homework and doing chores and so on.

That relationship can get contentious at times, especially as children get older and become more difficult. After children move out of the house, though, the relationship changes. It’s not that parents think the rules were bad; rather the children become adults, and become responsible for setting their own rules.

The analogy isn’t exactly the same with God, but similar. Paul says the Law was given to us as a guardian (tutor, schoolmaster, instructor, etc.). (Galatians 3:24) The Law was given to teach us something, to lay a certain foundation of understanding. The idea that Paul probably had in mind was a stern, taskmaster, training the children up with discipline.

The taskmaster’s relationship to the children is different than a parent’s relationship. A tutor only trains the children for a time when they are young. The instructor’s job is to make sure the children learn their lessons, and that is the only focus.


A parent is always a parent and never ceases to be a parent who loves and wants the best for the children. A taskmaster doesn’t love the children like a parent does.

But, it’s more complicated than that, and this is the key. The prophet Jeremiah talked about it in the context of a new covenant this way:

“I will put my law within them, and I will write it on their hearts. And I will be their God, and they shall be my people.” (Jer. 31:33)

This is God’s ultimate goal: that we would be receptive, willing and able to receive God’s law in us, written on our hearts.

God isn’t looking for law followers, but for children who desire to be like their father. He wants us to internalize His values and be like Him – not because we must, but because we want to!

Until Christ came, men were under the Law, but Christ came to earth in the form of a human and fulfilled the Law. He died to take the penalty for our transgression; he rose from the dead to demonstrate his authority and power over death; and he ascended to heaven, leaving the Holy Spirit as a guide and comforter for us.

The Holy Spirit is how God now writes his Law in us, on our hearts. The Law is set aside, now, with its commands and regulations. (Eph. 2:15) God is looking for people willing to receive is Spirit and internalize His character in themselves as His children.

But what does this have to do with politics?

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