כִּֽי־תִקְרַ֣ב אֶל־עִ֔יר לְהִלָּחֵ֖ם עָלֶ֑יהָ וְקָרָ֥אתָ אֵלֶ֖יהָ לְשָׁלֽוֹם׃
When thou drawest nigh unto a city to fight against it, then proclaim peace unto it.
Read kabbalistic (mystical) interpretation of Deuteronomy 20:10: and classical mystical sources.