Reference for I Chronicles 7:42

Rav laid great stress on the matter of lineage. A student quoted him as saying that the verse about the descendants of Asher, calling them chosen warriors, chiefs of the captains, (Chronicles I, 7:40) and signifying their standing in the army and the battlefield was written so that their reputation and prestige of the ancestors might protect them in battle.¹⁰⁾קדושין ע״ו ב׳.