The Sword of The Holy Knight「聖騎士の剣Seikishi no Ken」 is the 2nd episode of The Seven Deadly Sins anime series.
Meliodas, Hawk and Elizabeth arrive at the village of Bernia, discovering that the underground water source was recently sealed by a Holy Knight named Gilthunder, which was preventing the village from making the Bernia ale, which was their prime source of income. After innumerable unsuccessful attempts of the villagers to pull out the sword with which the source was blocked, Meliodas easily removes it. A celebration is held at the Boar Hat, and Meliodas was hailed as a savior by Bernia's villagers. Gilthunder, wanting to confirm whether the removal of his sword was an accident, threw a spear imbued with his power toward the town. Meliodas, however, easily stops and throws the spear back, destroying Fort Solgales. It is then when Gilthunder realizes that it was Meliodas.