Fighting for righteousness is very good, and I think the ending statement is good. But something about this feels off.
For one, I can't seem to find any passages regarding stoning people involved in divorce. In fact, quite the opposite; the Torah laws regarding divorce seemed to have been put in place to protect the rights of divorcées (see Deut. 24:1-4). Divorces were legal. However, God does not even desire that divorce be a thing. He even straight up says in Malachi 2:16 that He hates divorce. He allowed men in the Old Testament to divorce their wives only because of the hardness of their hearts (Matt. 19:8), and because He recognizes marriages are between two sinful beings, and so divorces are going to occur. But from the beginning, marriage was meant to be a lifelong commitment. If I am wrong about passages regarding the stoning of divorcées, then you may correct me, but I cannot find anything there, so I think this pastor is mistaken in that regard, sadly.
Second, it cannot be denied that stoning and death sentences were very severe, and may even seem cruel, as the pastor seems to understand them. But you have to take in the historical context. These laws are being given to a nation that has no concept of sin. They do not understand the wrongness of it. So God gives the Ten Commandments, which are a mirror on our own wickedness. The Moral Law. But there were also the ceremonial and ritual laws, which the preacher seems to be talking about here. These were put in place specifically for Israel, and involve sacrifices, tithing, ritual purity, etc. And of course, they touch on stoning and other penalties for sin. Again, they are severe. But I think they were put in place to 1. show how serious sin is to a holy God, both to Israel themselves and to other nations, 2. set Israel apart from other nations who worshiped idols and engaged in all sorts of other practices, most likely the kinds being condemned and sentenced here, and 3. to ensure Israel did not fall into these sins and become like other nations. The important thing to understand is that the wages of sin is death (Romans 6:23) and these people didn't understand sin or its consequences at the time, because they had no moral framework or reference. The death penalties, like I said earlier, showed these nations the seriousness and consequences of sin to Israel and other nations.
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