The short answer
The Bible presents these commands as tied to specific moments in Israel’s history, especially the conquest of Canaan and the judgment of Amalek. They are not presented as a general rule for how God’s people deal with outsiders in every age.
That matters because the texts themselves give reasons. Deuteronomy 9:4-5 says Israel is not receiving the land because it is more righteous than the nations around it. Deuteronomy 20 connects the command to the danger of idolatry and corruption. The issue is covenant faithfulness, not ethnic pride.
A key Hebrew word here is herem, often translated as ‘devote to destruction’ or something close to it. The term means that something is set apart for judgment rather than ordinary use. Once you see that, the passages are still severe, but they are not random acts of violence in the text’s own logic.
The main passages are doing different jobs
These destruction texts are often grouped together, but they are not identical.
Deuteronomy 20:16-18 gives war instruction for Israel’s life in the land. The warning is explicit: Israel is not to adopt the practices of the nations it is judging. The language is tied to covenant loyalty and the danger of being drawn into idolatry.
Joshua 6 narrates the fall of Jericho. That story is important because it includes Rahab’s rescue. The chapter is not simply about indiscriminate destruction; it is a judgment story with mercy already inside it.
1 Samuel 15 concerns Amalek and Saul’s failure to obey. The chapter is not mainly about military strategy. It becomes a test of whether Saul will take God’s command seriously or treat it like something to negotiate away.
Reading these passages as if they all mean the same thing flattens the Bible’s own distinctions.
Why the language sounds so extreme
Part of the difficulty is the force of the wording. Readers hear sentences about destroying everything and wonder how that can fit with the rest of Scripture.
One reason the passages feel harsher is that ancient war accounts often use total language. Phrases such as ’left no survivor’ can function as victory language, not always as a modern military report written in the style of a census. That does not erase the violence in the text, but it does warn against reading every phrase in a wooden, headline-like way.
Another reason is that the Bible keeps these texts near other passages that stress patience, mercy, and the possibility of repentance. Jonah 3 is a good example: judgment is announced, but repentance changes the outcome. The Bible does not present God as eager to destroy. It presents God as patient, then severe when judgment finally arrives.
What a Bible study reader should notice
Start with the passage’s own setting before jumping to moral conclusions.
- Is this law, narrative, or prophetic speech?
- What reason does the text give for the command?
- Does the passage connect the command to idolatry, covenant, or a prior act of aggression?
- Are there mercy scenes in the same story?
- Does the wording sound like ancient totalizing war language?
Those questions keep the reader from turning a difficult text into a slogan.
A few details are especially helpful.
Deuteronomy 20 is about protecting Israel from becoming like the nations around it.
Deuteronomy 7 says the issue is not numerical strength or moral superiority; it is the danger of being pulled into false worship.
Joshua 2 and 6 show that mercy is possible inside the conquest narrative, which keeps the story from becoming a simple ethnic blanket statement.
1 Samuel 15 shows that Saul’s disobedience is the theological crisis. The point of the chapter is not that violence itself is the highest good. The point is that Saul refuses the word of the Lord.
How Christians usually read these texts
Christian interpretation has never been reduced to one sentence, but several lines of reading recur again and again.
Many Christians read these passages as real judgments in salvation history. On that view, God is acting as judge over entrenched evil, not giving Israel a timeless model for how to treat enemies.
Others stress the shape of the language itself and argue that the ancient setting uses the rhetoric of complete victory. That reading changes how broad the command is understood to be, while still taking the passage seriously.
Many traditions also read the conquest typologically. In that reading, the destruction narratives point toward God’s opposition to sin, idolatry, and corruption. The people of God are not told to copy the conquest; they are told to live in holiness, trust, and obedience.
Across Catholic, Orthodox, and Protestant traditions, one point stays consistent: these texts are not a warrant for modern religious violence. The church is not Israel in the conquest period, and the New Testament does not hand believers a sword-and-territory mission.
Who should lean in, and who should be careful
Lean in if you want to understand the Bible on its own terms, especially the parts that do not resolve quickly.
Be careful if you want a passage you can use to win an argument, justify hostility, or turn God into a symbol for your own outrage. These texts punish shallow reading.
If the severity itself is what troubles you, that is not a sign that you missed the point. It is the point of the passage that these are weighty, sobering judgment scenes. The better response is to read more Scripture, not less.
A simple way to study these passages well
- Read the whole chapter, not one sentence.
- Identify the passage type: law, story, or prophetic warning.
- Look for the reason the text gives.
- Compare related passages like Deuteronomy 7, Deuteronomy 9, Joshua 6, and 1 Samuel 15.
- Read the passage alongside the wider Bible theme of justice, mercy, repentance, and holiness.
That method will not make the passage easy, but it will make it clearer.
Final verdict
Why did God command destruction in the Old Testament? In the Bible’s own framing, these commands belong to unique moments of covenant judgment, especially where idolatry, oppression, and the corruption of Israel’s calling are in view. They are severe, specific, and tied to a particular stage of redemptive history.
For Bible study purposes, the safest and most faithful conclusion is also the most direct one: these passages explain judgment in Israel’s story, not a standing pattern for God’s people in every era. Read them in context, keep them in the larger sweep of Scripture, and do not turn them into a template for modern violence.
FAQ
What does herem mean?
It refers to something being set apart for destruction or judgment. In these passages, it marks a severe covenant action rather than ordinary warfare language.
Why were Canaanites or Amalek singled out?
The text gives different reasons in different places. Deuteronomy links the Canaanite commands to idolatry and corruption. 1 Samuel 15 links Amalek to its earlier attack on Israel after the exodus.
Does this justify violence today?
No. Christian readers across traditions reject using these passages as a model for modern violence, coercion, or religious contempt.
Why is Rahab important?
Rahab shows that the conquest story is not simply ’everyone dies.’ Mercy is present in the same narrative, which helps readers see that the passage is about judgment and deliverance, not blind destruction.