Deuteronomy 20:8
And the officers shall speak further unto the people, and they shall say, What man is there that is fearful and fainthearted? let him go and return unto his house, lest his brethren’s heart faint as well as his heart.
Cross-reference
Deuteronomy 1:28 shows how the spies' fearful report discouraged Israel's heart — exactly the spread of fear that 20:8 seeks to prevent.
In Numbers 13:31-33, the spies' fearful report discourages the people, a direct example of faintheartedness spreading as warned here.
Numbers 14:1-3 shows the congregation's fearful reaction to the spies, proving how one fainthearted voice can cause mass despair.
Numbers 32:9 explicitly says the spies 'discouraged the heart' of Israel, the very outcome the regulation in Deuteronomy aims to prevent.
Judges 7:3 applies the same law: Gideon sends home the fearful before battle, directly fulfilling Deuteronomy 20:8.
Exodus 13:17 shows God avoiding a route that might cause Israel to fear and turn back, exactly the concern about fainthearted soldiers here.
In Jeremiah 49:23, Hamath and Arpad are described as fainthearted—same term used in Deuteronomy's battle exemption law.
In Ezekiel 21:7, every heart will melt and hands go feeble—expanding the fainthearted language from Deuteronomy's warfare context.
In 1 Samuel 13:7, the people follow Saul trembling—illustrating the faintheartedness that Deuteronomy permits to withdraw from battle.