Where does “武士の道” come from?

武士の道 (Japanese) comes from Japanese の, from Old Japanese の, from Middle Chinese 能 — talent, ability.

Ancestry of “武士の道”, step by step

武士の道 traces back through 3 separate lines of ancestry.

via Japanese の

StepLanguageWordMeaning
1Japaneseのgenitive case marker; nominative case marker in a...
2Old Japaneseのplain, field
3Middle Chinese能talent, ability

via Japanese 道

StepLanguageWordMeaning
1Japanese道Tao the way of nature, Taoism
2Middle Chinese道way

via Japanese 武士

StepLanguageWordMeaning
1Japanese武士a person who serves a lord or a master; an...
2Japanese伏—
Every word from Middle Chinese 能 →Every word from Old Japanese の →Every word from Japanese の →