What Deuteronomy 20:16-18 really means: Holiness Over Compromise

Context of Deuteronomy 20:16-18

To understand the harsh command in Deuteronomy 20:16-18, we need to see it within God’s larger plan for Israel’s holiness as they enter the Promised Land.

These instructions come as part of a broader set of laws in Deuteronomy 7:1-6, where God warns Israel not to make treaties or intermarry with the Canaanite nations because they will lead them into idolatry. He says, 'When the Lord your God brings you into the land that you are entering to take possession of it, and clears away many nations before you... you shall devote them to complete destruction.' The six named nations - the Hittites, Amorites, Canaanites, Perizzites, Hivites, and Jebusites - were deeply entrenched in practices like child sacrifice and temple prostitution, which God calls 'abominations.'

The command to leave nothing alive in certain cities was not a general rule for all wars but applied specifically to the heartland of Canaanite religion, where spiritual corruption was at its worst. God’s purpose wasn’t cruelty but protection - He wanted to safeguard Israel’s worship and identity as His chosen people. This was part of His covenant, a special agreement where He would bless them if they stayed faithful and separate from false gods.

The Meaning and Purpose of Total Destruction in Deuteronomy 20:16-18

The key to understanding this difficult command lies in the Hebrew word 'ḥāram' - to devote or set apart completely, often for destruction as an act of sacred judgment.

In ancient warfare, the idea of devoting something to a god after battle wasn't unique to Israel - nearby nations sometimes claimed they 'devoted' spoils or enemies to their gods. But in Israel's case, the act of ḥ-r-m was not about blind rage or ethnic cleansing. It was a solemn, religious act under God’s direct order, meant to remove something so deeply corrupted that it posed a fatal spiritual danger. These Canaanite societies were morally flawed; they practiced child sacrifice to Molech, which God calls an 'abomination' in Leviticus 18:21. To leave them intact would be like sparing a deadly infection in the middle of a healthy body.

God’s concern was not about land or politics; it was about holiness. He had chosen Israel to be a people set apart, through whom the whole world would one day be blessed. If they adopted Canaanite religion, they would break their covenant with God, the special agreement where He promised to bless and protect them as long as they remained faithful. The command was strict because idolatry is more than a mistake; it is a betrayal that can unravel everything. Later, the prophet Jeremiah would describe the result of ignoring this warning - when Israel did adopt these practices, the land became 'formless and void,' echoing the chaos before creation in Genesis 1, showing how deeply sin had corrupted them.

This law also points forward to a bigger picture. In 2 Corinthians 4:6, Paul writes, 'For God, who said, 'Let light shine out of darkness,' has shone in our hearts to give the light of the knowledge of the glory of God in the face of Jesus Christ.' God cleared the darkness from Canaan to make space for His people, and He now clears the darkness in our hearts through Christ. The old command to destroy evil completely finds its new form in how we deal with sin - not by physical warfare, but by turning away from anything that pulls us from God.

This command wasn't about genocide - it was about removing spiritual poison before it could spread.

So this law wasn’t about promoting violence - it was about preserving a mission. And that mission would one day expand to include all nations, not destroy them.

How This Law Points to Jesus and the New Covenant

This command to completely destroy evil in the land finds its true meaning when we see how Jesus deals with sin once and for all.

Jesus said in Matthew 5:17, 'Do not think that I have come to abolish the Law or the Prophets; I have not come to abolish them but to fulfill them.' He didn’t cancel the seriousness of sin or God’s demand for holiness - instead, he carried it to its full weight by living perfectly and dying for our failures.

Jesus didn't ignore the danger of sin - he faced it head-on to save us from it.

The author of Hebrews explains that the old laws, including those about judgment and purity, were 'shadows' of the good things to come, but the reality is found in Christ (Hebrews 10:1). Where the Canaanite nations represented spiritual corruption that had to be removed, Jesus now calls us to remove sin from our own hearts with the same seriousness. In 2 Corinthians 4:6, Paul says, 'For God, who said, 'Let light shine out of darkness,' has shone in our hearts to give the light of the knowledge of the glory of God in the face of Jesus Christ.' God cleared the land to make space for his people, and He now clears our hearts through grace. This isn’t about destroying people today, but about turning away from anything that leads us away from God - knowing that Jesus has already won the victory over sin and evil.

From Ancient Warfare to Spiritual Battle: The Lasting Meaning of ḥerem

The concept of ḥerem, or total devotion to destruction, moves from physical battle in Joshua to spiritual battle in the New Testament, showing how God’s people are still called to remove corruption - but now from within.

In Joshua 6:17-21, the people march around Jericho and then destroy everything in the city: 'And they devoted all in the city to destruction, both men and women, young and old, oxen, sheep, and donkeys, with the edge of the sword.' This was not random violence but a divine judgment carried out under God’s direct command, fulfilling what was said in Deuteronomy. The city was under ḥerem because it represented the heart of Canaanite rebellion against God’s holiness.

But the New Testament shifts this battle from physical enemies to spiritual ones. In Ephesians 6:12, Paul writes, 'For we do not wrestle against flesh and blood, but against the rulers, against the authorities, against the cosmic powers over this present darkness, against the spiritual forces of evil in the heavenly places.' This means our warfare today isn’t against people, but against the patterns of sin, deception, and idolatry that once corrupted Canaan and still corrupt hearts. Israel was instructed to leave nothing alive that could lead them astray; we must put to death anything in us that resists God - greed, pride, or false beliefs. The same seriousness that demanded total removal of evil in the land now applies to our inner life. Joshua obeyed God’s hard command; we follow Christ by turning completely from sin and trusting His power to cleanse us.

What was once a command to destroy cities is now a call to destroy sin in our hearts.

Finally, Revelation 19:11-21 shows the ultimate fulfillment of ḥerem in Jesus: 'From his mouth comes a sharp sword with which to strike down the nations, and he will rule them with a rod of iron. He will tread the winepress of the fury of the wrath of God the Almighty.' This isn’t a call for us to take up violence, but a promise that God will one day fully judge all evil. Our role is to let God destroy sin in us and to point others to the grace that saves even the worst rebels, as Rahab the Canaanite was spared.

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