What Does Deuteronomy 23:6 Mean?

Thou shalt not seek their peace nor their prosperity all thy days for ever.

This verse mandates perpetual non-alliance with Ammon and Moab. The Hebrew phrase lo tidrosh shalom vetov (לֹא־תִדְרֹשׁ שְׁלֹמָם וְטֹבָתָם) literally means 'do not seek their peace and their good.' This wasn't mere passive avoidance but active prohibition against pursuing treaties, trade agreements, or alliances that would promote Ammonite or Moabite interests. The dual temporal markers 'all thy days' and 'for ever' emphasize permanent application across all generations.

This command appears harsh by modern standards but must be understood theologically. Nations that actively oppose God's redemptive purposes cannot be treated as neutral parties. Ammon and Moab's hiring of Balaam to curse Israel (v. 4) revealed fundamental hostility toward divine purposes that disqualified them from covenant friendship. God's people were forbidden from advancing interests of those who sought Israel's destruction. This principle protected Israel from compromising alliances that would corrupt their worship and undermine covenant fidelity.

The Reformed tradition recognizes this principle's abiding relevance: believers must not promote or advance causes fundamentally opposed to God's kingdom. Yet this law's severity makes God's grace toward individuals like Ruth more astonishing. While the nations remained under judgment, individuals who renounced their heritage and embraced Yahweh found welcome. This paradox—corporate judgment with individual mercy—runs throughout Scripture, finding fullness in Christ who judges nations while welcoming individual believers from every tribe and tongue (Revelation 7:9).